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Finding the Fourth Proportional to 289,291.50, 433,959.12 and 89,632.04

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Solution

The fourth proportional to 289,291.50, 433,959.12 and 89,632.04 is: 134,454.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,291.50 : 433,959.12 = 89,632.04 : x
  2. Step 2: Convert to fraction form
    289,291.50/433,959.12 = 89,632.04/x
  3. Step 3: Cross multiply
    289,291.50x = 433,959.12 × 89,632.04
  4. Step 4: Simplify right side
    289,291.50x = 38,896,639,032.41
  5. Step 5: Solve for x
    x = 38,896,639,032.41/289,291.50
  6. Step 6: Final answer
    x = 134,454.83

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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.