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Finding the Fourth Proportional to 155,248.96, 232,678.60 and 66,398

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Solution

The fourth proportional to 155,248.96, 232,678.60 and 66,398 is: 99,513.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,248.96 : 232,678.60 = 66,398 : x
  2. Step 2: Convert to fraction form
    155,248.96/232,678.60 = 66,398/x
  3. Step 3: Cross multiply
    155,248.96x = 232,678.60 × 66,398
  4. Step 4: Simplify right side
    155,248.96x = 15,449,393,682.80
  5. Step 5: Solve for x
    x = 15,449,393,682.80/155,248.96
  6. Step 6: Final answer
    x = 99,513.67

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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.