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Finding the Fourth Proportional to 379,521.89, 569,263.40 and 113,284.61

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Solution

The fourth proportional to 379,521.89, 569,263.40 and 113,284.61 is: 169,921.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,521.89 : 569,263.40 = 113,284.61 : x
  2. Step 2: Convert to fraction form
    379,521.89/569,263.40 = 113,284.61/x
  3. Step 3: Cross multiply
    379,521.89x = 569,263.40 × 113,284.61
  4. Step 4: Simplify right side
    379,521.89x = 64,488,781,689.85
  5. Step 5: Solve for x
    x = 64,488,781,689.85/379,521.89
  6. Step 6: Final answer
    x = 169,921.11

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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.