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Finding the Fourth Proportional to 371,948.32, 513,250.32 and 221,016.16

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Solution

The fourth proportional to 371,948.32, 513,250.32 and 221,016.16 is: 304,979.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,948.32 : 513,250.32 = 221,016.16 : x
  2. Step 2: Convert to fraction form
    371,948.32/513,250.32 = 221,016.16/x
  3. Step 3: Cross multiply
    371,948.32x = 513,250.32 × 221,016.16
  4. Step 4: Simplify right side
    371,948.32x = 113,436,614,845.17
  5. Step 5: Solve for x
    x = 113,436,614,845.17/371,948.32
  6. Step 6: Final answer
    x = 304,979.51

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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.