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Finding the Fourth Proportional to 239,658.58, 359,487.99 and 81,888.58

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Solution

The fourth proportional to 239,658.58, 359,487.99 and 81,888.58 is: 122,832.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,658.58 : 359,487.99 = 81,888.58 : x
  2. Step 2: Convert to fraction form
    239,658.58/359,487.99 = 81,888.58/x
  3. Step 3: Cross multiply
    239,658.58x = 359,487.99 × 81,888.58
  4. Step 4: Simplify right side
    239,658.58x = 29,437,961,028.15
  5. Step 5: Solve for x
    x = 29,437,961,028.15/239,658.58
  6. Step 6: Final answer
    x = 122,832.91

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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.