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Finding the Fourth Proportional to 440,648.66, 660,768.86 and 356,201.30

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Solution

The fourth proportional to 440,648.66, 660,768.86 and 356,201.30 is: 534,136.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,648.66 : 660,768.86 = 356,201.30 : x
  2. Step 2: Convert to fraction form
    440,648.66/660,768.86 = 356,201.30/x
  3. Step 3: Cross multiply
    440,648.66x = 660,768.86 × 356,201.30
  4. Step 4: Simplify right side
    440,648.66x = 235,366,726,931.52
  5. Step 5: Solve for x
    x = 235,366,726,931.52/440,648.66
  6. Step 6: Final answer
    x = 534,136.94

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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.