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Finding the Fourth Proportional to 279,480.71, 421,104.18 and 230,654.45

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Solution

The fourth proportional to 279,480.71, 421,104.18 and 230,654.45 is: 347,535.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,480.71 : 421,104.18 = 230,654.45 : x
  2. Step 2: Convert to fraction form
    279,480.71/421,104.18 = 230,654.45/x
  3. Step 3: Cross multiply
    279,480.71x = 421,104.18 × 230,654.45
  4. Step 4: Simplify right side
    279,480.71x = 97,129,550,925.08
  5. Step 5: Solve for x
    x = 97,129,550,925.08/279,480.71
  6. Step 6: Final answer
    x = 347,535.80

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.