Home / 312,971.10-431,921.54-177,005.08

Finding the Fourth Proportional to 312,971.10, 431,921.54 and 177,005.08

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Solution

The fourth proportional to 312,971.10, 431,921.54 and 177,005.08 is: 244,279.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,971.10 : 431,921.54 = 177,005.08 : x
  2. Step 2: Convert to fraction form
    312,971.10/431,921.54 = 177,005.08/x
  3. Step 3: Cross multiply
    312,971.10x = 431,921.54 × 177,005.08
  4. Step 4: Simplify right side
    312,971.10x = 76,452,306,741.42
  5. Step 5: Solve for x
    x = 76,452,306,741.42/312,971.10
  6. Step 6: Final answer
    x = 244,279.13

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1.5x scale

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.