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Finding the Fourth Proportional to 153,436, 230,156.88 and 42,630.88

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Solution

The fourth proportional to 153,436, 230,156.88 and 42,630.88 is: 63,947.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,436 : 230,156.88 = 42,630.88 : x
  2. Step 2: Convert to fraction form
    153,436/230,156.88 = 42,630.88/x
  3. Step 3: Cross multiply
    153,436x = 230,156.88 × 42,630.88
  4. Step 4: Simplify right side
    153,436x = 9,811,790,332.45
  5. Step 5: Solve for x
    x = 9,811,790,332.45/153,436
  6. Step 6: Final answer
    x = 63,947.12

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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.