Home / 317,971.39-438,802.92-172,778.56

Finding the Fourth Proportional to 317,971.39, 438,802.92 and 172,778.56

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Solution

The fourth proportional to 317,971.39, 438,802.92 and 172,778.56 is: 238,435.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,971.39 : 438,802.92 = 172,778.56 : x
  2. Step 2: Convert to fraction form
    317,971.39/438,802.92 = 172,778.56/x
  3. Step 3: Cross multiply
    317,971.39x = 438,802.92 × 172,778.56
  4. Step 4: Simplify right side
    317,971.39x = 75,815,736,641.40
  5. Step 5: Solve for x
    x = 75,815,736,641.40/317,971.39
  6. Step 6: Final answer
    x = 238,435.72

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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.