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Finding the Fourth Proportional to 284,978,751.90, 427,744,549.91 and 137,530,077.69

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Solution

The fourth proportional to 284,978,751.90, 427,744,549.91 and 137,530,077.69 is: 206,428,517.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,978,751.90 : 427,744,549.91 = 137,530,077.69 : x
  2. Step 2: Convert to fraction form
    284,978,751.90/427,744,549.91 = 137,530,077.69/x
  3. Step 3: Cross multiply
    284,978,751.90x = 427,744,549.91 × 137,530,077.69
  4. Step 4: Simplify right side
    284,978,751.90x = 58,827,741,182,544,248
  5. Step 5: Solve for x
    x = 58,827,741,182,544,248/284,978,751.90
  6. Step 6: Final answer
    x = 206,428,517.18

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