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Finding the Fourth Proportional to 150,423.20, 225,721.20 and 56,938.40

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Solution

The fourth proportional to 150,423.20, 225,721.20 and 56,938.40 is: 85,440.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,423.20 : 225,721.20 = 56,938.40 : x
  2. Step 2: Convert to fraction form
    150,423.20/225,721.20 = 56,938.40/x
  3. Step 3: Cross multiply
    150,423.20x = 225,721.20 × 56,938.40
  4. Step 4: Simplify right side
    150,423.20x = 12,852,203,974.08
  5. Step 5: Solve for x
    x = 12,852,203,974.08/150,423.20
  6. Step 6: Final answer
    x = 85,440.30

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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.