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Finding the Fourth Proportional to 317,717.60, 438,340.64 and 203,063.33

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Solution

The fourth proportional to 317,717.60, 438,340.64 and 203,063.33 is: 280,157.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,717.60 : 438,340.64 = 203,063.33 : x
  2. Step 2: Convert to fraction form
    317,717.60/438,340.64 = 203,063.33/x
  3. Step 3: Cross multiply
    317,717.60x = 438,340.64 × 203,063.33
  4. Step 4: Simplify right side
    317,717.60x = 89,010,910,113.27
  5. Step 5: Solve for x
    x = 89,010,910,113.27/317,717.60
  6. Step 6: Final answer
    x = 280,157.32

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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.