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Finding the Fourth Proportional to 212,664.90, 319,472.55 and 177,672.90

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Solution

The fourth proportional to 212,664.90, 319,472.55 and 177,672.90 is: 266,906.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,664.90 : 319,472.55 = 177,672.90 : x
  2. Step 2: Convert to fraction form
    212,664.90/319,472.55 = 177,672.90/x
  3. Step 3: Cross multiply
    212,664.90x = 319,472.55 × 177,672.90
  4. Step 4: Simplify right side
    212,664.90x = 56,761,614,428.90
  5. Step 5: Solve for x
    x = 56,761,614,428.90/212,664.90
  6. Step 6: Final answer
    x = 266,906.36

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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.