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Finding the Fourth Proportional to 247,287.80, 370,931.70 and 89,459.30

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Solution

The fourth proportional to 247,287.80, 370,931.70 and 89,459.30 is: 134,188.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,287.80 : 370,931.70 = 89,459.30 : x
  2. Step 2: Convert to fraction form
    247,287.80/370,931.70 = 89,459.30/x
  3. Step 3: Cross multiply
    247,287.80x = 370,931.70 × 89,459.30
  4. Step 4: Simplify right side
    247,287.80x = 33,183,290,229.81
  5. Step 5: Solve for x
    x = 33,183,290,229.81/247,287.80
  6. Step 6: Final answer
    x = 134,188.95

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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.