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Finding the Fourth Proportional to 485,262.40, 727,548.96 and 185,490.40

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Solution

The fourth proportional to 485,262.40, 727,548.96 and 185,490.40 is: 278,103.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,262.40 : 727,548.96 = 185,490.40 : x
  2. Step 2: Convert to fraction form
    485,262.40/727,548.96 = 185,490.40/x
  3. Step 3: Cross multiply
    485,262.40x = 727,548.96 × 185,490.40
  4. Step 4: Simplify right side
    485,262.40x = 134,953,347,609.98
  5. Step 5: Solve for x
    x = 134,953,347,609.98/485,262.40
  6. Step 6: Final answer
    x = 278,103.86

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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.