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Finding the Fourth Proportional to 351,838, 527,557.06 and 138,490.28

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Solution

The fourth proportional to 351,838, 527,557.06 and 138,490.28 is: 207,656.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,838 : 527,557.06 = 138,490.28 : x
  2. Step 2: Convert to fraction form
    351,838/527,557.06 = 138,490.28/x
  3. Step 3: Cross multiply
    351,838x = 527,557.06 × 138,490.28
  4. Step 4: Simplify right side
    351,838x = 73,061,524,955.38
  5. Step 5: Solve for x
    x = 73,061,524,955.38/351,838
  6. Step 6: Final answer
    x = 207,656.72

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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.