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Finding the Fourth Proportional to 387,532.58, 580,457.58 and 187,433.34

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Solution

The fourth proportional to 387,532.58, 580,457.58 and 187,433.34 is: 280,743.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,532.58 : 580,457.58 = 187,433.34 : x
  2. Step 2: Convert to fraction form
    387,532.58/580,457.58 = 187,433.34/x
  3. Step 3: Cross multiply
    387,532.58x = 580,457.58 × 187,433.34
  4. Step 4: Simplify right side
    387,532.58x = 108,797,102,947.72
  5. Step 5: Solve for x
    x = 108,797,102,947.72/387,532.58
  6. Step 6: Final answer
    x = 280,743.11

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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.