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Finding the Fourth Proportional to 317,480.88, 438,109.56 and 174,241.20

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Solution

The fourth proportional to 317,480.88, 438,109.56 and 174,241.20 is: 240,445.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,480.88 : 438,109.56 = 174,241.20 : x
  2. Step 2: Convert to fraction form
    317,480.88/438,109.56 = 174,241.20/x
  3. Step 3: Cross multiply
    317,480.88x = 438,109.56 × 174,241.20
  4. Step 4: Simplify right side
    317,480.88x = 76,336,735,465.87
  5. Step 5: Solve for x
    x = 76,336,735,465.87/317,480.88
  6. Step 6: Final answer
    x = 240,445.14

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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.