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Finding the Fourth Proportional to 298,430.56, 447,727.80 and 88,068.48

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Solution

The fourth proportional to 298,430.56, 447,727.80 and 88,068.48 is: 132,126.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,430.56 : 447,727.80 = 88,068.48 : x
  2. Step 2: Convert to fraction form
    298,430.56/447,727.80 = 88,068.48/x
  3. Step 3: Cross multiply
    298,430.56x = 447,727.80 × 88,068.48
  4. Step 4: Simplify right side
    298,430.56x = 39,430,706,799.74
  5. Step 5: Solve for x
    x = 39,430,706,799.74/298,430.56
  6. Step 6: Final answer
    x = 132,126.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.