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Finding the Fourth Proportional to 417,318.78, 625,767.68 and 297,307.16

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Solution

The fourth proportional to 417,318.78, 625,767.68 and 297,307.16 is: 445,810.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,318.78 : 625,767.68 = 297,307.16 : x
  2. Step 2: Convert to fraction form
    417,318.78/625,767.68 = 297,307.16/x
  3. Step 3: Cross multiply
    417,318.78x = 625,767.68 × 297,307.16
  4. Step 4: Simplify right side
    417,318.78x = 186,045,210,049.29
  5. Step 5: Solve for x
    x = 186,045,210,049.29/417,318.78
  6. Step 6: Final answer
    x = 445,810.77

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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.