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Finding the Fourth Proportional to 440,298.34, 660,541.60 and 136,685.79

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Solution

The fourth proportional to 440,298.34, 660,541.60 and 136,685.79 is: 205,057.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,298.34 : 660,541.60 = 136,685.79 : x
  2. Step 2: Convert to fraction form
    440,298.34/660,541.60 = 136,685.79/x
  3. Step 3: Cross multiply
    440,298.34x = 660,541.60 × 136,685.79
  4. Step 4: Simplify right side
    440,298.34x = 90,286,650,423.86
  5. Step 5: Solve for x
    x = 90,286,650,423.86/440,298.34
  6. Step 6: Final answer
    x = 205,057.89

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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.