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Finding the Fourth Proportional to 347,801.80, 521,702.70 and 343,136.20

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Solution

The fourth proportional to 347,801.80, 521,702.70 and 343,136.20 is: 514,704.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,801.80 : 521,702.70 = 343,136.20 : x
  2. Step 2: Convert to fraction form
    347,801.80/521,702.70 = 343,136.20/x
  3. Step 3: Cross multiply
    347,801.80x = 521,702.70 × 343,136.20
  4. Step 4: Simplify right side
    347,801.80x = 179,015,082,007.74
  5. Step 5: Solve for x
    x = 179,015,082,007.74/347,801.80
  6. Step 6: Final answer
    x = 514,704.30

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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.