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Finding the Fourth Proportional to 225,438.40, 311,101.12 and 124,834.24

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Solution

The fourth proportional to 225,438.40, 311,101.12 and 124,834.24 is: 172,269.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,438.40 : 311,101.12 = 124,834.24 : x
  2. Step 2: Convert to fraction form
    225,438.40/311,101.12 = 124,834.24/x
  3. Step 3: Cross multiply
    225,438.40x = 311,101.12 × 124,834.24
  4. Step 4: Simplify right side
    225,438.40x = 38,836,071,878.35
  5. Step 5: Solve for x
    x = 38,836,071,878.35/225,438.40
  6. Step 6: Final answer
    x = 172,269.11

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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.