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Finding the Fourth Proportional to 378,502.20, 567,062.10 and 307,999.80

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Solution

The fourth proportional to 378,502.20, 567,062.10 and 307,999.80 is: 461,437.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,502.20 : 567,062.10 = 307,999.80 : x
  2. Step 2: Convert to fraction form
    378,502.20/567,062.10 = 307,999.80/x
  3. Step 3: Cross multiply
    378,502.20x = 567,062.10 × 307,999.80
  4. Step 4: Simplify right side
    378,502.20x = 174,655,013,387.58
  5. Step 5: Solve for x
    x = 174,655,013,387.58/378,502.20
  6. Step 6: Final answer
    x = 461,437.25

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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.