Home / 260,657,513,139.48-390,775,276,810.67-81,491,275,934.35

Finding the Fourth Proportional to 260,657,513,139.48, 390,775,276,810.67 and 81,491,275,934.35

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Solution

The fourth proportional to 260,657,513,139.48, 390,775,276,810.67 and 81,491,275,934.35 is: 122,170,949,639.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,657,513,139.48 : 390,775,276,810.67 = 81,491,275,934.35 : x
  2. Step 2: Convert to fraction form
    260,657,513,139.48/390,775,276,810.67 = 81,491,275,934.35/x
  3. Step 3: Cross multiply
    260,657,513,139.48x = 390,775,276,810.67 × 81,491,275,934.35
  4. Step 4: Simplify right side
    260,657,513,139.48x = 31,844,775,910,900,311,785,472
  5. Step 5: Solve for x
    x = 31,844,775,910,900,311,785,472/260,657,513,139.48
  6. Step 6: Final answer
    x = 122,170,949,639.42

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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.