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Finding the Fourth Proportional to 418,326,452.81, 627,566,292.71 and 172,549,013.30

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Solution

The fourth proportional to 418,326,452.81, 627,566,292.71 and 172,549,013.30 is: 258,855,121.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,326,452.81 : 627,566,292.71 = 172,549,013.30 : x
  2. Step 2: Convert to fraction form
    418,326,452.81/627,566,292.71 = 172,549,013.30/x
  3. Step 3: Cross multiply
    418,326,452.81x = 627,566,292.71 × 172,549,013.30
  4. Step 4: Simplify right side
    418,326,452.81x = 108,285,944,583,448,912
  5. Step 5: Solve for x
    x = 108,285,944,583,448,912/418,326,452.81
  6. Step 6: Final answer
    x = 258,855,121.06

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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.