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Finding the Fourth Proportional to 239,611.78, 359,282.80 and 79,602.06

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Solution

The fourth proportional to 239,611.78, 359,282.80 and 79,602.06 is: 119,358.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,611.78 : 359,282.80 = 79,602.06 : x
  2. Step 2: Convert to fraction form
    239,611.78/359,282.80 = 79,602.06/x
  3. Step 3: Cross multiply
    239,611.78x = 359,282.80 × 79,602.06
  4. Step 4: Simplify right side
    239,611.78x = 28,599,651,002.57
  5. Step 5: Solve for x
    x = 28,599,651,002.57/239,611.78
  6. Step 6: Final answer
    x = 119,358.28

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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.