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Finding the Fourth Proportional to 477,115.63, 715,500.15 and 261,134.00

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Solution

The fourth proportional to 477,115.63, 715,500.15 and 261,134.00 is: 391,606.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,115.63 : 715,500.15 = 261,134.00 : x
  2. Step 2: Convert to fraction form
    477,115.63/715,500.15 = 261,134.00/x
  3. Step 3: Cross multiply
    477,115.63x = 715,500.15 × 261,134.00
  4. Step 4: Simplify right side
    477,115.63x = 186,841,418,321.16
  5. Step 5: Solve for x
    x = 186,841,418,321.16/477,115.63
  6. Step 6: Final answer
    x = 391,606.16

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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.