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Finding the Fourth Proportional to 239,222.01, 329,980.39 and 142,360.90

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Solution

The fourth proportional to 239,222.01, 329,980.39 and 142,360.90 is: 196,371.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,222.01 : 329,980.39 = 142,360.90 : x
  2. Step 2: Convert to fraction form
    239,222.01/329,980.39 = 142,360.90/x
  3. Step 3: Cross multiply
    239,222.01x = 329,980.39 × 142,360.90
  4. Step 4: Simplify right side
    239,222.01x = 46,976,305,302.75
  5. Step 5: Solve for x
    x = 46,976,305,302.75/239,222.01
  6. Step 6: Final answer
    x = 196,371.17

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1.5x scale

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.