Home / 419,948.34-579,512.02-247,921.72

Finding the Fourth Proportional to 419,948.34, 579,512.02 and 247,921.72

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Solution

The fourth proportional to 419,948.34, 579,512.02 and 247,921.72 is: 342,122.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,948.34 : 579,512.02 = 247,921.72 : x
  2. Step 2: Convert to fraction form
    419,948.34/579,512.02 = 247,921.72/x
  3. Step 3: Cross multiply
    419,948.34x = 579,512.02 × 247,921.72
  4. Step 4: Simplify right side
    419,948.34x = 143,673,612,621.91
  5. Step 5: Solve for x
    x = 143,673,612,621.91/419,948.34
  6. Step 6: Final answer
    x = 342,122.12

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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.