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Finding the Fourth Proportional to 261,929.40, 392,310.90 and 226,937.40

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Solution

The fourth proportional to 261,929.40, 392,310.90 and 226,937.40 is: 339,900.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,929.40 : 392,310.90 = 226,937.40 : x
  2. Step 2: Convert to fraction form
    261,929.40/392,310.90 = 226,937.40/x
  3. Step 3: Cross multiply
    261,929.40x = 392,310.90 × 226,937.40
  4. Step 4: Simplify right side
    261,929.40x = 89,030,015,637.66
  5. Step 5: Solve for x
    x = 89,030,015,637.66/261,929.40
  6. Step 6: Final answer
    x = 339,900.81

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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.