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Finding the Fourth Proportional to 317,431.76, 438,062.51 and 174,190.55

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Solution

The fourth proportional to 317,431.76, 438,062.51 and 174,190.55 is: 240,386.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,431.76 : 438,062.51 = 174,190.55 : x
  2. Step 2: Convert to fraction form
    317,431.76/438,062.51 = 174,190.55/x
  3. Step 3: Cross multiply
    317,431.76x = 438,062.51 × 174,190.55
  4. Step 4: Simplify right side
    317,431.76x = 76,306,347,796.44
  5. Step 5: Solve for x
    x = 76,306,347,796.44/317,431.76
  6. Step 6: Final answer
    x = 240,386.62

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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.