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Finding the Fourth Proportional to 376,918.65, 520,141.91 and 207,149.13

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Solution

The fourth proportional to 376,918.65, 520,141.91 and 207,149.13 is: 285,862.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,918.65 : 520,141.91 = 207,149.13 : x
  2. Step 2: Convert to fraction form
    376,918.65/520,141.91 = 207,149.13/x
  3. Step 3: Cross multiply
    376,918.65x = 520,141.91 × 207,149.13
  4. Step 4: Simplify right side
    376,918.65x = 107,746,943,097.29
  5. Step 5: Solve for x
    x = 107,746,943,097.29/376,918.65
  6. Step 6: Final answer
    x = 285,862.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.