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Finding the Fourth Proportional to 239,154.66, 358,782.57 and 79,221.53

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Solution

The fourth proportional to 239,154.66, 358,782.57 and 79,221.53 is: 118,849.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,154.66 : 358,782.57 = 79,221.53 : x
  2. Step 2: Convert to fraction form
    239,154.66/358,782.57 = 79,221.53/x
  3. Step 3: Cross multiply
    239,154.66x = 358,782.57 × 79,221.53
  4. Step 4: Simplify right side
    239,154.66x = 28,423,302,338.82
  5. Step 5: Solve for x
    x = 28,423,302,338.82/239,154.66
  6. Step 6: Final answer
    x = 118,849.04

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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.