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Finding the Fourth Proportional to 212,514.62, 318,695.36 and 70,333.65

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Solution

The fourth proportional to 212,514.62, 318,695.36 and 70,333.65 is: 105,475.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,514.62 : 318,695.36 = 70,333.65 : x
  2. Step 2: Convert to fraction form
    212,514.62/318,695.36 = 70,333.65/x
  3. Step 3: Cross multiply
    212,514.62x = 318,695.36 × 70,333.65
  4. Step 4: Simplify right side
    212,514.62x = 22,415,007,555.20
  5. Step 5: Solve for x
    x = 22,415,007,555.20/212,514.62
  6. Step 6: Final answer
    x = 105,475.13

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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.