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Finding the Fourth Proportional to 319,669.76, 479,123.30 and 148,660.62

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Solution

The fourth proportional to 319,669.76, 479,123.30 and 148,660.62 is: 222,813.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,669.76 : 479,123.30 = 148,660.62 : x
  2. Step 2: Convert to fraction form
    319,669.76/479,123.30 = 148,660.62/x
  3. Step 3: Cross multiply
    319,669.76x = 479,123.30 × 148,660.62
  4. Step 4: Simplify right side
    319,669.76x = 71,226,766,834.45
  5. Step 5: Solve for x
    x = 71,226,766,834.45/319,669.76
  6. Step 6: Final answer
    x = 222,813.59

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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.