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Finding the Fourth Proportional to 239,396.16, 359,080.40 and 87,695.58

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Solution

The fourth proportional to 239,396.16, 359,080.40 and 87,695.58 is: 131,538.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,396.16 : 359,080.40 = 87,695.58 : x
  2. Step 2: Convert to fraction form
    239,396.16/359,080.40 = 87,695.58/x
  3. Step 3: Cross multiply
    239,396.16x = 359,080.40 × 87,695.58
  4. Step 4: Simplify right side
    239,396.16x = 31,489,763,944.63
  5. Step 5: Solve for x
    x = 31,489,763,944.63/239,396.16
  6. Step 6: Final answer
    x = 131,538.30

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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.