Home / 432,386.08-647,867.45-147,921.12

Finding the Fourth Proportional to 432,386.08, 647,867.45 and 147,921.12

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Solution

The fourth proportional to 432,386.08, 647,867.45 and 147,921.12 is: 221,638.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,386.08 : 647,867.45 = 147,921.12 : x
  2. Step 2: Convert to fraction form
    432,386.08/647,867.45 = 147,921.12/x
  3. Step 3: Cross multiply
    432,386.08x = 647,867.45 × 147,921.12
  4. Step 4: Simplify right side
    432,386.08x = 95,833,278,815.54
  5. Step 5: Solve for x
    x = 95,833,278,815.54/432,386.08
  6. Step 6: Final answer
    x = 221,638.21

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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.