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Finding the Fourth Proportional to 502,825.20, 754,237.80 and 343,392.90

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Solution

The fourth proportional to 502,825.20, 754,237.80 and 343,392.90 is: 515,089.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,825.20 : 754,237.80 = 343,392.90 : x
  2. Step 2: Convert to fraction form
    502,825.20/754,237.80 = 343,392.90/x
  3. Step 3: Cross multiply
    502,825.20x = 754,237.80 × 343,392.90
  4. Step 4: Simplify right side
    502,825.20x = 258,999,905,431.62
  5. Step 5: Solve for x
    x = 258,999,905,431.62/502,825.20
  6. Step 6: Final answer
    x = 515,089.35

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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.