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Finding the Fourth Proportional to 379,747.53, 569,677.92 and 139,842.98

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Solution

The fourth proportional to 379,747.53, 569,677.92 and 139,842.98 is: 209,785.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,747.53 : 569,677.92 = 139,842.98 : x
  2. Step 2: Convert to fraction form
    379,747.53/569,677.92 = 139,842.98/x
  3. Step 3: Cross multiply
    379,747.53x = 569,677.92 × 139,842.98
  4. Step 4: Simplify right side
    379,747.53x = 79,665,455,124.61
  5. Step 5: Solve for x
    x = 79,665,455,124.61/379,747.53
  6. Step 6: Final answer
    x = 209,785.31

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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.