Home / 226,228.38-312,182.99-129,434.15

Finding the Fourth Proportional to 226,228.38, 312,182.99 and 129,434.15

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Solution

The fourth proportional to 226,228.38, 312,182.99 and 129,434.15 is: 178,612.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,228.38 : 312,182.99 = 129,434.15 : x
  2. Step 2: Convert to fraction form
    226,228.38/312,182.99 = 129,434.15/x
  3. Step 3: Cross multiply
    226,228.38x = 312,182.99 × 129,434.15
  4. Step 4: Simplify right side
    226,228.38x = 40,407,139,955.11
  5. Step 5: Solve for x
    x = 40,407,139,955.11/226,228.38
  6. Step 6: Final answer
    x = 178,612.16

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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.