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Finding the Fourth Proportional to 239,786.40, 359,737.52 and 90,028.32

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Solution

The fourth proportional to 239,786.40, 359,737.52 and 90,028.32 is: 135,064.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,786.40 : 359,737.52 = 90,028.32 : x
  2. Step 2: Convert to fraction form
    239,786.40/359,737.52 = 90,028.32/x
  3. Step 3: Cross multiply
    239,786.40x = 359,737.52 × 90,028.32
  4. Step 4: Simplify right side
    239,786.40x = 32,386,564,566.57
  5. Step 5: Solve for x
    x = 32,386,564,566.57/239,786.40
  6. Step 6: Final answer
    x = 135,064.23

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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.