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Finding the Fourth Proportional to 379,712.87, 523,998 and 207,631.38

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Solution

The fourth proportional to 379,712.87, 523,998 and 207,631.38 is: 286,528.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,712.87 : 523,998 = 207,631.38 : x
  2. Step 2: Convert to fraction form
    379,712.87/523,998 = 207,631.38/x
  3. Step 3: Cross multiply
    379,712.87x = 523,998 × 207,631.38
  4. Step 4: Simplify right side
    379,712.87x = 108,798,427,857.24
  5. Step 5: Solve for x
    x = 108,798,427,857.24/379,712.87
  6. Step 6: Final answer
    x = 286,528.16

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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.