Home / 319,719.60-479,579.28-95,079.12

Finding the Fourth Proportional to 319,719.60, 479,579.28 and 95,079.12

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Solution

The fourth proportional to 319,719.60, 479,579.28 and 95,079.12 is: 142,618.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,719.60 : 479,579.28 = 95,079.12 : x
  2. Step 2: Convert to fraction form
    319,719.60/479,579.28 = 95,079.12/x
  3. Step 3: Cross multiply
    319,719.60x = 479,579.28 × 95,079.12
  4. Step 4: Simplify right side
    319,719.60x = 45,597,975,912.63
  5. Step 5: Solve for x
    x = 45,597,975,912.63/319,719.60
  6. Step 6: Final answer
    x = 142,618.64

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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.