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Finding the Fourth Proportional to 485,072.10, 727,608.15 and 152,648.10

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Solution

The fourth proportional to 485,072.10, 727,608.15 and 152,648.10 is: 228,972.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,072.10 : 727,608.15 = 152,648.10 : x
  2. Step 2: Convert to fraction form
    485,072.10/727,608.15 = 152,648.10/x
  3. Step 3: Cross multiply
    485,072.10x = 727,608.15 × 152,648.10
  4. Step 4: Simplify right side
    485,072.10x = 111,068,001,642.02
  5. Step 5: Solve for x
    x = 111,068,001,642.02/485,072.10
  6. Step 6: Final answer
    x = 228,972.15

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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.