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Finding the Fourth Proportional to 440,760, 608,248.80 and 239,556

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Solution

The fourth proportional to 440,760, 608,248.80 and 239,556 is: 330,587.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,760 : 608,248.80 = 239,556 : x
  2. Step 2: Convert to fraction form
    440,760/608,248.80 = 239,556/x
  3. Step 3: Cross multiply
    440,760x = 608,248.80 × 239,556
  4. Step 4: Simplify right side
    440,760x = 145,709,649,532.80
  5. Step 5: Solve for x
    x = 145,709,649,532.80/440,760
  6. Step 6: Final answer
    x = 330,587.28

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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.