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Finding the Fourth Proportional to 155,217.78, 232,631.98 and 66,366.99

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Solution

The fourth proportional to 155,217.78, 232,631.98 and 66,366.99 is: 99,467.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,217.78 : 232,631.98 = 66,366.99 : x
  2. Step 2: Convert to fraction form
    155,217.78/232,631.98 = 66,366.99/x
  3. Step 3: Cross multiply
    155,217.78x = 232,631.98 × 66,366.99
  4. Step 4: Simplify right side
    155,217.78x = 15,439,084,124.42
  5. Step 5: Solve for x
    x = 15,439,084,124.42/155,217.78
  6. Step 6: Final answer
    x = 99,467.24

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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.