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Finding the Fourth Proportional to 219,346.20, 329,019.30 and 140,614.20

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Solution

The fourth proportional to 219,346.20, 329,019.30 and 140,614.20 is: 210,921.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,346.20 : 329,019.30 = 140,614.20 : x
  2. Step 2: Convert to fraction form
    219,346.20/329,019.30 = 140,614.20/x
  3. Step 3: Cross multiply
    219,346.20x = 329,019.30 × 140,614.20
  4. Step 4: Simplify right side
    219,346.20x = 46,264,785,654.06
  5. Step 5: Solve for x
    x = 46,264,785,654.06/219,346.20
  6. Step 6: Final answer
    x = 210,921.30

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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.