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Finding the Fourth Proportional to 347,380.20, 521,127.90 and 147,796.20

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Solution

The fourth proportional to 347,380.20, 521,127.90 and 147,796.20 is: 221,718.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,380.20 : 521,127.90 = 147,796.20 : x
  2. Step 2: Convert to fraction form
    347,380.20/521,127.90 = 147,796.20/x
  3. Step 3: Cross multiply
    347,380.20x = 521,127.90 × 147,796.20
  4. Step 4: Simplify right side
    347,380.20x = 77,020,723,333.98
  5. Step 5: Solve for x
    x = 77,020,723,333.98/347,380.20
  6. Step 6: Final answer
    x = 221,718.81

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1.5x scale

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.