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Finding the Fourth Proportional to 440,572, 608,041.20 and 261,724

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Solution

The fourth proportional to 440,572, 608,041.20 and 261,724 is: 361,209.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,572 : 608,041.20 = 261,724 : x
  2. Step 2: Convert to fraction form
    440,572/608,041.20 = 261,724/x
  3. Step 3: Cross multiply
    440,572x = 608,041.20 × 261,724
  4. Step 4: Simplify right side
    440,572x = 159,138,975,028.80
  5. Step 5: Solve for x
    x = 159,138,975,028.80/440,572
  6. Step 6: Final answer
    x = 361,209.92

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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.