Home / 260,657,513,133.97-390,775,276,802.43-81,491,275,928.86

Finding the Fourth Proportional to 260,657,513,133.97, 390,775,276,802.43 and 81,491,275,928.86

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Solution

The fourth proportional to 260,657,513,133.97, 390,775,276,802.43 and 81,491,275,928.86 is: 122,170,949,631.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,657,513,133.97 : 390,775,276,802.43 = 81,491,275,928.86 : x
  2. Step 2: Convert to fraction form
    260,657,513,133.97/390,775,276,802.43 = 81,491,275,928.86/x
  3. Step 3: Cross multiply
    260,657,513,133.97x = 390,775,276,802.43 × 81,491,275,928.86
  4. Step 4: Simplify right side
    260,657,513,133.97x = 31,844,775,908,081,903,075,328
  5. Step 5: Solve for x
    x = 31,844,775,908,081,903,075,328/260,657,513,133.97
  6. Step 6: Final answer
    x = 122,170,949,631.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.