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Finding the Fourth Proportional to 347,960.81, 521,941.22 and 85,304.81

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Solution

The fourth proportional to 347,960.81, 521,941.22 and 85,304.81 is: 127,957.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,960.81 : 521,941.22 = 85,304.81 : x
  2. Step 2: Convert to fraction form
    347,960.81/521,941.22 = 85,304.81/x
  3. Step 3: Cross multiply
    347,960.81x = 521,941.22 × 85,304.81
  4. Step 4: Simplify right side
    347,960.81x = 44,524,097,801.49
  5. Step 5: Solve for x
    x = 44,524,097,801.49/347,960.81
  6. Step 6: Final answer
    x = 127,957.22

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Similar ratio
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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.