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Finding the Fourth Proportional to 231,820.70, 347,471.85 and 98,678.30

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Solution

The fourth proportional to 231,820.70, 347,471.85 and 98,678.30 is: 147,907.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,820.70 : 347,471.85 = 98,678.30 : x
  2. Step 2: Convert to fraction form
    231,820.70/347,471.85 = 98,678.30/x
  3. Step 3: Cross multiply
    231,820.70x = 347,471.85 × 98,678.30
  4. Step 4: Simplify right side
    231,820.70x = 34,287,931,455.86
  5. Step 5: Solve for x
    x = 34,287,931,455.86/231,820.70
  6. Step 6: Final answer
    x = 147,907.12

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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.