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Finding the Fourth Proportional to 261,932.40, 392,315.40 and 226,940.40

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Solution

The fourth proportional to 261,932.40, 392,315.40 and 226,940.40 is: 339,905.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,932.40 : 392,315.40 = 226,940.40 : x
  2. Step 2: Convert to fraction form
    261,932.40/392,315.40 = 226,940.40/x
  3. Step 3: Cross multiply
    261,932.40x = 392,315.40 × 226,940.40
  4. Step 4: Simplify right side
    261,932.40x = 89,032,213,802.16
  5. Step 5: Solve for x
    x = 89,032,213,802.16/261,932.40
  6. Step 6: Final answer
    x = 339,905.31

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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.