Home / 347,961.40-521,520.90-147,861.70

Finding the Fourth Proportional to 347,961.40, 521,520.90 and 147,861.70

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Solution

The fourth proportional to 347,961.40, 521,520.90 and 147,861.70 is: 221,613.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,961.40 : 521,520.90 = 147,861.70 : x
  2. Step 2: Convert to fraction form
    347,961.40/521,520.90 = 147,861.70/x
  3. Step 3: Cross multiply
    347,961.40x = 521,520.90 × 147,861.70
  4. Step 4: Simplify right side
    347,961.40x = 77,112,966,859.53
  5. Step 5: Solve for x
    x = 77,112,966,859.53/347,961.40
  6. Step 6: Final answer
    x = 221,613.57

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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.