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Finding the Fourth Proportional to 239,164.88, 358,763.72 and 79,240.50

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Solution

The fourth proportional to 239,164.88, 358,763.72 and 79,240.50 is: 118,866.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,164.88 : 358,763.72 = 79,240.50 : x
  2. Step 2: Convert to fraction form
    239,164.88/358,763.72 = 79,240.50/x
  3. Step 3: Cross multiply
    239,164.88x = 358,763.72 × 79,240.50
  4. Step 4: Simplify right side
    239,164.88x = 28,428,616,158.46
  5. Step 5: Solve for x
    x = 28,428,616,158.46/239,164.88
  6. Step 6: Final answer
    x = 118,866.18

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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.