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Finding the Fourth Proportional to 407,258.40, 611,179.20 and 170,770.80

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Solution

The fourth proportional to 407,258.40, 611,179.20 and 170,770.80 is: 256,278.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,258.40 : 611,179.20 = 170,770.80 : x
  2. Step 2: Convert to fraction form
    407,258.40/611,179.20 = 170,770.80/x
  3. Step 3: Cross multiply
    407,258.40x = 611,179.20 × 170,770.80
  4. Step 4: Simplify right side
    407,258.40x = 104,371,560,927.36
  5. Step 5: Solve for x
    x = 104,371,560,927.36/407,258.40
  6. Step 6: Final answer
    x = 256,278.47

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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.