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Finding the Fourth Proportional to 440,402.70, 607,758.78 and 239,198.70

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Solution

The fourth proportional to 440,402.70, 607,758.78 and 239,198.70 is: 330,095.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,402.70 : 607,758.78 = 239,198.70 : x
  2. Step 2: Convert to fraction form
    440,402.70/607,758.78 = 239,198.70/x
  3. Step 3: Cross multiply
    440,402.70x = 607,758.78 × 239,198.70
  4. Step 4: Simplify right side
    440,402.70x = 145,375,110,089.59
  5. Step 5: Solve for x
    x = 145,375,110,089.59/440,402.70
  6. Step 6: Final answer
    x = 330,095.86

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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.