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Finding the Fourth Proportional to 338,659,319.20, 507,988,978.80 and 108,651,654.40

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Solution

The fourth proportional to 338,659,319.20, 507,988,978.80 and 108,651,654.40 is: 162,977,481.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,659,319.20 : 507,988,978.80 = 108,651,654.40 : x
  2. Step 2: Convert to fraction form
    338,659,319.20/507,988,978.80 = 108,651,654.40/x
  3. Step 3: Cross multiply
    338,659,319.20x = 507,988,978.80 × 108,651,654.40
  4. Step 4: Simplify right side
    338,659,319.20x = 55,193,842,963,586,528
  5. Step 5: Solve for x
    x = 55,193,842,963,586,528/338,659,319.20
  6. Step 6: Final answer
    x = 162,977,481.60

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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.