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Finding the Fourth Proportional to 439,231.76, 606,139.80 and 238,027.76

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Solution

The fourth proportional to 439,231.76, 606,139.80 and 238,027.76 is: 328,478.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,231.76 : 606,139.80 = 238,027.76 : x
  2. Step 2: Convert to fraction form
    439,231.76/606,139.80 = 238,027.76/x
  3. Step 3: Cross multiply
    439,231.76x = 606,139.80 × 238,027.76
  4. Step 4: Simplify right side
    439,231.76x = 144,278,098,840.85
  5. Step 5: Solve for x
    x = 144,278,098,840.85/439,231.76
  6. Step 6: Final answer
    x = 328,478.29

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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.