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Finding the Fourth Proportional to 372,398.48, 513,841.88 and 243,302.60

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Solution

The fourth proportional to 372,398.48, 513,841.88 and 243,302.60 is: 335,713.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,398.48 : 513,841.88 = 243,302.60 : x
  2. Step 2: Convert to fraction form
    372,398.48/513,841.88 = 243,302.60/x
  3. Step 3: Cross multiply
    372,398.48x = 513,841.88 × 243,302.60
  4. Step 4: Simplify right side
    372,398.48x = 125,019,065,392.89
  5. Step 5: Solve for x
    x = 125,019,065,392.89/372,398.48
  6. Step 6: Final answer
    x = 335,713.15

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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.