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Finding the Fourth Proportional to 342,511.20, 513,757.20 and 155,522.40

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Solution

The fourth proportional to 342,511.20, 513,757.20 and 155,522.40 is: 233,279.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,511.20 : 513,757.20 = 155,522.40 : x
  2. Step 2: Convert to fraction form
    342,511.20/513,757.20 = 155,522.40/x
  3. Step 3: Cross multiply
    342,511.20x = 513,757.20 × 155,522.40
  4. Step 4: Simplify right side
    342,511.20x = 79,900,752,761.28
  5. Step 5: Solve for x
    x = 79,900,752,761.28/342,511.20
  6. Step 6: Final answer
    x = 233,279.24

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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.