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Finding the Fourth Proportional to 352,306.48, 486,543.36 and 329,736.64

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Solution

The fourth proportional to 352,306.48, 486,543.36 and 329,736.64 is: 455,373.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,306.48 : 486,543.36 = 329,736.64 : x
  2. Step 2: Convert to fraction form
    352,306.48/486,543.36 = 329,736.64/x
  3. Step 3: Cross multiply
    352,306.48x = 486,543.36 × 329,736.64
  4. Step 4: Simplify right side
    352,306.48x = 160,431,172,740.71
  5. Step 5: Solve for x
    x = 160,431,172,740.71/352,306.48
  6. Step 6: Final answer
    x = 455,373.89

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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.