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Finding the Fourth Proportional to 202,419.10, 303,823.05 and 172,870.30

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Solution

The fourth proportional to 202,419.10, 303,823.05 and 172,870.30 is: 259,471.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,419.10 : 303,823.05 = 172,870.30 : x
  2. Step 2: Convert to fraction form
    202,419.10/303,823.05 = 172,870.30/x
  3. Step 3: Cross multiply
    202,419.10x = 303,823.05 × 172,870.30
  4. Step 4: Simplify right side
    202,419.10x = 52,521,981,800.42
  5. Step 5: Solve for x
    x = 52,521,981,800.42/202,419.10
  6. Step 6: Final answer
    x = 259,471.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.