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Finding the Fourth Proportional to 252,001.40, 378,002.10 and 243,447.80

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Solution

The fourth proportional to 252,001.40, 378,002.10 and 243,447.80 is: 365,171.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,001.40 : 378,002.10 = 243,447.80 : x
  2. Step 2: Convert to fraction form
    252,001.40/378,002.10 = 243,447.80/x
  3. Step 3: Cross multiply
    252,001.40x = 378,002.10 × 243,447.80
  4. Step 4: Simplify right side
    252,001.40x = 92,023,779,640.38
  5. Step 5: Solve for x
    x = 92,023,779,640.38/252,001.40
  6. Step 6: Final answer
    x = 365,171.70

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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.