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Finding the Fourth Proportional to 387,084.56, 580,663.38 and 150,445.40

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Solution

The fourth proportional to 387,084.56, 580,663.38 and 150,445.40 is: 225,682.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,084.56 : 580,663.38 = 150,445.40 : x
  2. Step 2: Convert to fraction form
    387,084.56/580,663.38 = 150,445.40/x
  3. Step 3: Cross multiply
    387,084.56x = 580,663.38 × 150,445.40
  4. Step 4: Simplify right side
    387,084.56x = 87,358,134,469.45
  5. Step 5: Solve for x
    x = 87,358,134,469.45/387,084.56
  6. Step 6: Final answer
    x = 225,682.30

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1.5x scale

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.