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Finding the Fourth Proportional to 308,122.87, 425,231.57 and 170,298.84

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Solution

The fourth proportional to 308,122.87, 425,231.57 and 170,298.84 is: 235,024.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,122.87 : 425,231.57 = 170,298.84 : x
  2. Step 2: Convert to fraction form
    308,122.87/425,231.57 = 170,298.84/x
  3. Step 3: Cross multiply
    308,122.87x = 425,231.57 × 170,298.84
  4. Step 4: Simplify right side
    308,122.87x = 72,416,443,102.38
  5. Step 5: Solve for x
    x = 72,416,443,102.38/308,122.87
  6. Step 6: Final answer
    x = 235,024.56

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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.