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Finding the Fourth Proportional to 319,667.76, 479,120.31 and 148,658.62

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Solution

The fourth proportional to 319,667.76, 479,120.31 and 148,658.62 is: 222,810.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,667.76 : 479,120.31 = 148,658.62 : x
  2. Step 2: Convert to fraction form
    319,667.76/479,120.31 = 148,658.62/x
  3. Step 3: Cross multiply
    319,667.76x = 479,120.31 × 148,658.62
  4. Step 4: Simplify right side
    319,667.76x = 71,225,364,098.57
  5. Step 5: Solve for x
    x = 71,225,364,098.57/319,667.76
  6. Step 6: Final answer
    x = 222,810.60

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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.