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Finding the Fourth Proportional to 347,704.40, 521,135.40 and 147,604.70

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Solution

The fourth proportional to 347,704.40, 521,135.40 and 147,604.70 is: 221,228.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,704.40 : 521,135.40 = 147,604.70 : x
  2. Step 2: Convert to fraction form
    347,704.40/521,135.40 = 147,604.70/x
  3. Step 3: Cross multiply
    347,704.40x = 521,135.40 × 147,604.70
  4. Step 4: Simplify right side
    347,704.40x = 76,922,034,376.38
  5. Step 5: Solve for x
    x = 76,922,034,376.38/347,704.40
  6. Step 6: Final answer
    x = 221,228.25

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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.