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Finding the Fourth Proportional to 425,227.69, 637,864.82 and 172,470.65

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Solution

The fourth proportional to 425,227.69, 637,864.82 and 172,470.65 is: 258,715.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,227.69 : 637,864.82 = 172,470.65 : x
  2. Step 2: Convert to fraction form
    425,227.69/637,864.82 = 172,470.65/x
  3. Step 3: Cross multiply
    425,227.69x = 637,864.82 × 172,470.65
  4. Step 4: Simplify right side
    425,227.69x = 110,012,959,255.18
  5. Step 5: Solve for x
    x = 110,012,959,255.18/425,227.69
  6. Step 6: Final answer
    x = 258,715.42

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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.