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Finding the Fourth Proportional to 155,438.49, 214,505.13 and 88,370.49

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Solution

The fourth proportional to 155,438.49, 214,505.13 and 88,370.49 is: 121,951.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,438.49 : 214,505.13 = 88,370.49 : x
  2. Step 2: Convert to fraction form
    155,438.49/214,505.13 = 88,370.49/x
  3. Step 3: Cross multiply
    155,438.49x = 214,505.13 × 88,370.49
  4. Step 4: Simplify right side
    155,438.49x = 18,955,923,445.61
  5. Step 5: Solve for x
    x = 18,955,923,445.61/155,438.49
  6. Step 6: Final answer
    x = 121,951.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.