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Finding the Fourth Proportional to 372,905.70, 559,358.55 and 123,587.70

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Solution

The fourth proportional to 372,905.70, 559,358.55 and 123,587.70 is: 185,381.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,905.70 : 559,358.55 = 123,587.70 : x
  2. Step 2: Convert to fraction form
    372,905.70/559,358.55 = 123,587.70/x
  3. Step 3: Cross multiply
    372,905.70x = 559,358.55 × 123,587.70
  4. Step 4: Simplify right side
    372,905.70x = 69,129,836,669.84
  5. Step 5: Solve for x
    x = 69,129,836,669.84/372,905.70
  6. Step 6: Final answer
    x = 185,381.55

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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.