Home / 319,965.60-479,948.40-109,576.20

Finding the Fourth Proportional to 319,965.60, 479,948.40 and 109,576.20

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Solution

The fourth proportional to 319,965.60, 479,948.40 and 109,576.20 is: 164,364.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,965.60 : 479,948.40 = 109,576.20 : x
  2. Step 2: Convert to fraction form
    319,965.60/479,948.40 = 109,576.20/x
  3. Step 3: Cross multiply
    319,965.60x = 479,948.40 × 109,576.20
  4. Step 4: Simplify right side
    319,965.60x = 52,590,921,868.08
  5. Step 5: Solve for x
    x = 52,590,921,868.08/319,965.60
  6. Step 6: Final answer
    x = 164,364.30

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Similar ratio
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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.