Home / 212,429.28-318,695.76-64,685.28

Finding the Fourth Proportional to 212,429.28, 318,695.76 and 64,685.28

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Solution

The fourth proportional to 212,429.28, 318,695.76 and 64,685.28 is: 97,043.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,429.28 : 318,695.76 = 64,685.28 : x
  2. Step 2: Convert to fraction form
    212,429.28/318,695.76 = 64,685.28/x
  3. Step 3: Cross multiply
    212,429.28x = 318,695.76 × 64,685.28
  4. Step 4: Simplify right side
    212,429.28x = 20,614,924,470.41
  5. Step 5: Solve for x
    x = 20,614,924,470.41/212,429.28
  6. Step 6: Final answer
    x = 97,043.71

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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.