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Finding the Fourth Proportional to 288,999.80, 433,532.10 and 89,318.60

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Solution

The fourth proportional to 288,999.80, 433,532.10 and 89,318.60 is: 133,987.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,999.80 : 433,532.10 = 89,318.60 : x
  2. Step 2: Convert to fraction form
    288,999.80/433,532.10 = 89,318.60/x
  3. Step 3: Cross multiply
    288,999.80x = 433,532.10 × 89,318.60
  4. Step 4: Simplify right side
    288,999.80x = 38,722,480,227.06
  5. Step 5: Solve for x
    x = 38,722,480,227.06/288,999.80
  6. Step 6: Final answer
    x = 133,987.91

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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.