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Finding the Fourth Proportional to 342,366.20, 513,539.70 and 155,377.40

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Solution

The fourth proportional to 342,366.20, 513,539.70 and 155,377.40 is: 233,061.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,366.20 : 513,539.70 = 155,377.40 : x
  2. Step 2: Convert to fraction form
    342,366.20/513,539.70 = 155,377.40/x
  3. Step 3: Cross multiply
    342,366.20x = 513,539.70 × 155,377.40
  4. Step 4: Simplify right side
    342,366.20x = 79,792,463,382.78
  5. Step 5: Solve for x
    x = 79,792,463,382.78/342,366.20
  6. Step 6: Final answer
    x = 233,061.74

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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.