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Finding the Fourth Proportional to 387,060.56, 580,627.56 and 150,421.52

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Solution

The fourth proportional to 387,060.56, 580,627.56 and 150,421.52 is: 225,646.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,060.56 : 580,627.56 = 150,421.52 : x
  2. Step 2: Convert to fraction form
    387,060.56/580,627.56 = 150,421.52/x
  3. Step 3: Cross multiply
    387,060.56x = 580,627.56 × 150,421.52
  4. Step 4: Simplify right side
    387,060.56x = 87,338,880,129.09
  5. Step 5: Solve for x
    x = 87,338,880,129.09/387,060.56
  6. Step 6: Final answer
    x = 225,646.55

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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.