Home / 212,434.76-318,700.14-70,279.70

Finding the Fourth Proportional to 212,434.76, 318,700.14 and 70,279.70

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Solution

The fourth proportional to 212,434.76, 318,700.14 and 70,279.70 is: 105,435.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,434.76 : 318,700.14 = 70,279.70 : x
  2. Step 2: Convert to fraction form
    212,434.76/318,700.14 = 70,279.70/x
  3. Step 3: Cross multiply
    212,434.76x = 318,700.14 × 70,279.70
  4. Step 4: Simplify right side
    212,434.76x = 22,398,150,229.16
  5. Step 5: Solve for x
    x = 22,398,150,229.16/212,434.76
  6. Step 6: Final answer
    x = 105,435.43

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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.