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Finding the Fourth Proportional to 308,763.39, 426,084.31 and 170,948.45

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Solution

The fourth proportional to 308,763.39, 426,084.31 and 170,948.45 is: 235,903.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,763.39 : 426,084.31 = 170,948.45 : x
  2. Step 2: Convert to fraction form
    308,763.39/426,084.31 = 170,948.45/x
  3. Step 3: Cross multiply
    308,763.39x = 426,084.31 × 170,948.45
  4. Step 4: Simplify right side
    308,763.39x = 72,838,452,363.82
  5. Step 5: Solve for x
    x = 72,838,452,363.82/308,763.39
  6. Step 6: Final answer
    x = 235,903.78

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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.