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Finding the Fourth Proportional to 440,532.72, 660,475.86 and 140,840.82

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Solution

The fourth proportional to 440,532.72, 660,475.86 and 140,840.82 is: 211,157.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,532.72 : 660,475.86 = 140,840.82 : x
  2. Step 2: Convert to fraction form
    440,532.72/660,475.86 = 140,840.82/x
  3. Step 3: Cross multiply
    440,532.72x = 660,475.86 × 140,840.82
  4. Step 4: Simplify right side
    440,532.72x = 93,021,961,712.61
  5. Step 5: Solve for x
    x = 93,021,961,712.61/440,532.72
  6. Step 6: Final answer
    x = 211,157.89

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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.