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Finding the Fourth Proportional to 239,862.71, 359,728.38 and 90,091.41

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Solution

The fourth proportional to 239,862.71, 359,728.38 and 90,091.41 is: 135,112.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,862.71 : 359,728.38 = 90,091.41 : x
  2. Step 2: Convert to fraction form
    239,862.71/359,728.38 = 90,091.41/x
  3. Step 3: Cross multiply
    239,862.71x = 359,728.38 × 90,091.41
  4. Step 4: Simplify right side
    239,862.71x = 32,408,436,971.22
  5. Step 5: Solve for x
    x = 32,408,436,971.22/239,862.71
  6. Step 6: Final answer
    x = 135,112.45

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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.