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Finding the Fourth Proportional to 239,840.77, 359,640.66 and 79,860.15

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Solution

The fourth proportional to 239,840.77, 359,640.66 and 79,860.15 is: 119,750.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,840.77 : 359,640.66 = 79,860.15 : x
  2. Step 2: Convert to fraction form
    239,840.77/359,640.66 = 79,860.15/x
  3. Step 3: Cross multiply
    239,840.77x = 359,640.66 × 79,860.15
  4. Step 4: Simplify right side
    239,840.77x = 28,720,957,353.17
  5. Step 5: Solve for x
    x = 28,720,957,353.17/239,840.77
  6. Step 6: Final answer
    x = 119,750.11

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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.