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Finding the Fourth Proportional to 319,670.87, 441,144.88 and 176,429.90

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Solution

The fourth proportional to 319,670.87, 441,144.88 and 176,429.90 is: 243,472.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,670.87 : 441,144.88 = 176,429.90 : x
  2. Step 2: Convert to fraction form
    319,670.87/441,144.88 = 176,429.90/x
  3. Step 3: Cross multiply
    319,670.87x = 441,144.88 × 176,429.90
  4. Step 4: Simplify right side
    319,670.87x = 77,831,147,725.70
  5. Step 5: Solve for x
    x = 77,831,147,725.70/319,670.87
  6. Step 6: Final answer
    x = 243,472.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.