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Finding the Fourth Proportional to 658,930.40, 988,165.20 and 343,282.40

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Solution

The fourth proportional to 658,930.40, 988,165.20 and 343,282.40 is: 514,803.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,930.40 : 988,165.20 = 343,282.40 : x
  2. Step 2: Convert to fraction form
    658,930.40/988,165.20 = 343,282.40/x
  3. Step 3: Cross multiply
    658,930.40x = 988,165.20 × 343,282.40
  4. Step 4: Simplify right side
    658,930.40x = 339,219,721,452.48
  5. Step 5: Solve for x
    x = 339,219,721,452.48/658,930.40
  6. Step 6: Final answer
    x = 514,803.57

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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.