Home / 260,254,712.40-390,382,981.02-66,166,148.49

Finding the Fourth Proportional to 260,254,712.40, 390,382,981.02 and 66,166,148.49

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Solution

The fourth proportional to 260,254,712.40, 390,382,981.02 and 66,166,148.49 is: 99,249,454.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,254,712.40 : 390,382,981.02 = 66,166,148.49 : x
  2. Step 2: Convert to fraction form
    260,254,712.40/390,382,981.02 = 66,166,148.49/x
  3. Step 3: Cross multiply
    260,254,712.40x = 390,382,981.02 × 66,166,148.49
  4. Step 4: Simplify right side
    260,254,712.40x = 25,830,138,290,138,172
  5. Step 5: Solve for x
    x = 25,830,138,290,138,172/260,254,712.40
  6. Step 6: Final answer
    x = 99,249,454.71

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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.