Home / 308,187.20-425,307.41-172,221.47

Finding the Fourth Proportional to 308,187.20, 425,307.41 and 172,221.47

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Solution

The fourth proportional to 308,187.20, 425,307.41 and 172,221.47 is: 237,670.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,187.20 : 425,307.41 = 172,221.47 : x
  2. Step 2: Convert to fraction form
    308,187.20/425,307.41 = 172,221.47/x
  3. Step 3: Cross multiply
    308,187.20x = 425,307.41 × 172,221.47
  4. Step 4: Simplify right side
    308,187.20x = 73,247,067,515.08
  5. Step 5: Solve for x
    x = 73,247,067,515.08/308,187.20
  6. Step 6: Final answer
    x = 237,670.70

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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.