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Finding the Fourth Proportional to 308,059.32, 425,117.17 and 172,095.21

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Solution

The fourth proportional to 308,059.32, 425,117.17 and 172,095.21 is: 237,488.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,059.32 : 425,117.17 = 172,095.21 : x
  2. Step 2: Convert to fraction form
    308,059.32/425,117.17 = 172,095.21/x
  3. Step 3: Cross multiply
    308,059.32x = 425,117.17 × 172,095.21
  4. Step 4: Simplify right side
    308,059.32x = 73,160,629,278.31
  5. Step 5: Solve for x
    x = 73,160,629,278.31/308,059.32
  6. Step 6: Final answer
    x = 237,488.77

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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.