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Finding the Fourth Proportional to 225,476, 311,144.40 and 124,866.08

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Solution

The fourth proportional to 225,476, 311,144.40 and 124,866.08 is: 172,308.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,476 : 311,144.40 = 124,866.08 : x
  2. Step 2: Convert to fraction form
    225,476/311,144.40 = 124,866.08/x
  3. Step 3: Cross multiply
    225,476x = 311,144.40 × 124,866.08
  4. Step 4: Simplify right side
    225,476x = 38,851,381,541.95
  5. Step 5: Solve for x
    x = 38,851,381,541.95/225,476
  6. Step 6: Final answer
    x = 172,308.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.