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Finding the Fourth Proportional to 440,612.88, 608,049.48 and 239,408.88

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Solution

The fourth proportional to 440,612.88, 608,049.48 and 239,408.88 is: 330,386.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,612.88 : 608,049.48 = 239,408.88 : x
  2. Step 2: Convert to fraction form
    440,612.88/608,049.48 = 239,408.88/x
  3. Step 3: Cross multiply
    440,612.88x = 608,049.48 × 239,408.88
  4. Step 4: Simplify right side
    440,612.88x = 145,572,444,991.38
  5. Step 5: Solve for x
    x = 145,572,444,991.38/440,612.88
  6. Step 6: Final answer
    x = 330,386.27

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Half scale
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Double scale
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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.