Home / 309,462.42-464,143.85-84,770.35

Finding the Fourth Proportional to 309,462.42, 464,143.85 and 84,770.35

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Solution

The fourth proportional to 309,462.42, 464,143.85 and 84,770.35 is: 127,141.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,462.42 : 464,143.85 = 84,770.35 : x
  2. Step 2: Convert to fraction form
    309,462.42/464,143.85 = 84,770.35/x
  3. Step 3: Cross multiply
    309,462.42x = 464,143.85 × 84,770.35
  4. Step 4: Simplify right side
    309,462.42x = 39,345,635,110.11
  5. Step 5: Solve for x
    x = 39,345,635,110.11/309,462.42
  6. Step 6: Final answer
    x = 127,141.88

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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.