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Finding the Fourth Proportional to 288,079.69, 432,119.61 and 98,541.87

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Solution

The fourth proportional to 288,079.69, 432,119.61 and 98,541.87 is: 147,812.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,079.69 : 432,119.61 = 98,541.87 : x
  2. Step 2: Convert to fraction form
    288,079.69/432,119.61 = 98,541.87/x
  3. Step 3: Cross multiply
    288,079.69x = 432,119.61 × 98,541.87
  4. Step 4: Simplify right side
    288,079.69x = 42,581,872,812.62
  5. Step 5: Solve for x
    x = 42,581,872,812.62/288,079.69
  6. Step 6: Final answer
    x = 147,812.83

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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.