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Finding the Fourth Proportional to 371,236.71, 511,919.42 and 220,304.55

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Solution

The fourth proportional to 371,236.71, 511,919.42 and 220,304.55 is: 303,790.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,236.71 : 511,919.42 = 220,304.55 : x
  2. Step 2: Convert to fraction form
    371,236.71/511,919.42 = 220,304.55/x
  3. Step 3: Cross multiply
    371,236.71x = 511,919.42 × 220,304.55
  4. Step 4: Simplify right side
    371,236.71x = 112,778,176,357.84
  5. Step 5: Solve for x
    x = 112,778,176,357.84/371,236.71
  6. Step 6: Final answer
    x = 303,790.47

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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.