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Finding the Fourth Proportional to 307,388.88, 424,227.14 and 229,729.65

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Solution

The fourth proportional to 307,388.88, 424,227.14 and 229,729.65 is: 317,049.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,388.88 : 424,227.14 = 229,729.65 : x
  2. Step 2: Convert to fraction form
    307,388.88/424,227.14 = 229,729.65/x
  3. Step 3: Cross multiply
    307,388.88x = 424,227.14 × 229,729.65
  4. Step 4: Simplify right side
    307,388.88x = 97,457,552,392.70
  5. Step 5: Solve for x
    x = 97,457,552,392.70/307,388.88
  6. Step 6: Final answer
    x = 317,049.70

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1.5x scale

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.