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Finding the Fourth Proportional to 334,139.40, 501,209.10 and 215,944.20

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Solution

The fourth proportional to 334,139.40, 501,209.10 and 215,944.20 is: 323,916.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    334,139.40 : 501,209.10 = 215,944.20 : x
  2. Step 2: Convert to fraction form
    334,139.40/501,209.10 = 215,944.20/x
  3. Step 3: Cross multiply
    334,139.40x = 501,209.10 × 215,944.20
  4. Step 4: Simplify right side
    334,139.40x = 108,233,198,132.22
  5. Step 5: Solve for x
    x = 108,233,198,132.22/334,139.40
  6. Step 6: Final answer
    x = 323,916.30

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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.