Home / 440,490.20-660,678.94-140,945.72

Finding the Fourth Proportional to 440,490.20, 660,678.94 and 140,945.72

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Solution

The fourth proportional to 440,490.20, 660,678.94 and 140,945.72 is: 211,400.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,490.20 : 660,678.94 = 140,945.72 : x
  2. Step 2: Convert to fraction form
    440,490.20/660,678.94 = 140,945.72/x
  3. Step 3: Cross multiply
    440,490.20x = 660,678.94 × 140,945.72
  4. Step 4: Simplify right side
    440,490.20x = 93,119,870,715.02
  5. Step 5: Solve for x
    x = 93,119,870,715.02/440,490.20
  6. Step 6: Final answer
    x = 211,400.55

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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.