Home / 318,054.79-438,908.25-172,857.16

Finding the Fourth Proportional to 318,054.79, 438,908.25 and 172,857.16

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Solution

The fourth proportional to 318,054.79, 438,908.25 and 172,857.16 is: 238,538.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,054.79 : 438,908.25 = 172,857.16 : x
  2. Step 2: Convert to fraction form
    318,054.79/438,908.25 = 172,857.16/x
  3. Step 3: Cross multiply
    318,054.79x = 438,908.25 × 172,857.16
  4. Step 4: Simplify right side
    318,054.79x = 75,868,433,595.57
  5. Step 5: Solve for x
    x = 75,868,433,595.57/318,054.79
  6. Step 6: Final answer
    x = 238,538.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.