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Finding the Fourth Proportional to 229,142.59, 343,631.86 and 79,342.65

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Solution

The fourth proportional to 229,142.59, 343,631.86 and 79,342.65 is: 118,985.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,142.59 : 343,631.86 = 79,342.65 : x
  2. Step 2: Convert to fraction form
    229,142.59/343,631.86 = 79,342.65/x
  3. Step 3: Cross multiply
    229,142.59x = 343,631.86 × 79,342.65
  4. Step 4: Simplify right side
    229,142.59x = 27,264,662,396.83
  5. Step 5: Solve for x
    x = 27,264,662,396.83/229,142.59
  6. Step 6: Final answer
    x = 118,985.58

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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.