Home / 212,434.38-318,699.58-70,279.32

Finding the Fourth Proportional to 212,434.38, 318,699.58 and 70,279.32

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Solution

The fourth proportional to 212,434.38, 318,699.58 and 70,279.32 is: 105,434.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,434.38 : 318,699.58 = 70,279.32 : x
  2. Step 2: Convert to fraction form
    212,434.38/318,699.58 = 70,279.32/x
  3. Step 3: Cross multiply
    212,434.38x = 318,699.58 × 70,279.32
  4. Step 4: Simplify right side
    212,434.38x = 22,397,989,766.69
  5. Step 5: Solve for x
    x = 22,397,989,766.69/212,434.38
  6. Step 6: Final answer
    x = 105,434.86

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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.