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Finding the Fourth Proportional to 379,706.35, 569,560.07 and 155,066.79

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Solution

The fourth proportional to 379,706.35, 569,560.07 and 155,066.79 is: 232,600.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,706.35 : 569,560.07 = 155,066.79 : x
  2. Step 2: Convert to fraction form
    379,706.35/569,560.07 = 155,066.79/x
  3. Step 3: Cross multiply
    379,706.35x = 569,560.07 × 155,066.79
  4. Step 4: Simplify right side
    379,706.35x = 88,319,853,816.74
  5. Step 5: Solve for x
    x = 88,319,853,816.74/379,706.35
  6. Step 6: Final answer
    x = 232,600.42

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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.