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Finding the Fourth Proportional to 403,042.20, 555,820.65 and 250,105.20

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Solution

The fourth proportional to 403,042.20, 555,820.65 and 250,105.20 is: 344,910.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,042.20 : 555,820.65 = 250,105.20 : x
  2. Step 2: Convert to fraction form
    403,042.20/555,820.65 = 250,105.20/x
  3. Step 3: Cross multiply
    403,042.20x = 555,820.65 × 250,105.20
  4. Step 4: Simplify right side
    403,042.20x = 139,013,634,832.38
  5. Step 5: Solve for x
    x = 139,013,634,832.38/403,042.20
  6. Step 6: Final answer
    x = 344,910.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.