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Finding the Fourth Proportional to 239,151.62, 358,778.03 and 79,218.50

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Solution

The fourth proportional to 239,151.62, 358,778.03 and 79,218.50 is: 118,844.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,151.62 : 358,778.03 = 79,218.50 : x
  2. Step 2: Convert to fraction form
    239,151.62/358,778.03 = 79,218.50/x
  3. Step 3: Cross multiply
    239,151.62x = 358,778.03 × 79,218.50
  4. Step 4: Simplify right side
    239,151.62x = 28,421,855,179.57
  5. Step 5: Solve for x
    x = 28,421,855,179.57/239,151.62
  6. Step 6: Final answer
    x = 118,844.50

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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.