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Finding the Fourth Proportional to 363,990.60, 545,985.90 and 127,308.60

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Solution

The fourth proportional to 363,990.60, 545,985.90 and 127,308.60 is: 190,962.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,990.60 : 545,985.90 = 127,308.60 : x
  2. Step 2: Convert to fraction form
    363,990.60/545,985.90 = 127,308.60/x
  3. Step 3: Cross multiply
    363,990.60x = 545,985.90 × 127,308.60
  4. Step 4: Simplify right side
    363,990.60x = 69,508,700,548.74
  5. Step 5: Solve for x
    x = 69,508,700,548.74/363,990.60
  6. Step 6: Final answer
    x = 190,962.90

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Similar ratio
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1.5x scale

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.