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Finding the Fourth Proportional to 318,920.48, 440,110.28 and 175,680.56

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Solution

The fourth proportional to 318,920.48, 440,110.28 and 175,680.56 is: 242,439.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,920.48 : 440,110.28 = 175,680.56 : x
  2. Step 2: Convert to fraction form
    318,920.48/440,110.28 = 175,680.56/x
  3. Step 3: Cross multiply
    318,920.48x = 440,110.28 × 175,680.56
  4. Step 4: Simplify right side
    318,920.48x = 77,318,820,452.16
  5. Step 5: Solve for x
    x = 77,318,820,452.16/318,920.48
  6. Step 6: Final answer
    x = 242,439.18

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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.