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Finding the Fourth Proportional to 317,720.60, 438,344.77 and 203,066.33

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Solution

The fourth proportional to 317,720.60, 438,344.77 and 203,066.33 is: 280,161.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,720.60 : 438,344.77 = 203,066.33 : x
  2. Step 2: Convert to fraction form
    317,720.60/438,344.77 = 203,066.33/x
  3. Step 3: Cross multiply
    317,720.60x = 438,344.77 × 203,066.33
  4. Step 4: Simplify right side
    317,720.60x = 89,013,063,718.59
  5. Step 5: Solve for x
    x = 89,013,063,718.59/317,720.60
  6. Step 6: Final answer
    x = 280,161.45

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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.