Home / 224,421.82-309,713.96-128,934.70

Finding the Fourth Proportional to 224,421.82, 309,713.96 and 128,934.70

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Solution

The fourth proportional to 224,421.82, 309,713.96 and 128,934.70 is: 177,936.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,421.82 : 309,713.96 = 128,934.70 : x
  2. Step 2: Convert to fraction form
    224,421.82/309,713.96 = 128,934.70/x
  3. Step 3: Cross multiply
    224,421.82x = 309,713.96 × 128,934.70
  4. Step 4: Simplify right side
    224,421.82x = 39,932,876,518.41
  5. Step 5: Solve for x
    x = 39,932,876,518.41/224,421.82
  6. Step 6: Final answer
    x = 177,936.69

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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.