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Finding the Fourth Proportional to 353,920.76, 488,517.37 and 240,809.12

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Solution

The fourth proportional to 353,920.76, 488,517.37 and 240,809.12 is: 332,389.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,920.76 : 488,517.37 = 240,809.12 : x
  2. Step 2: Convert to fraction form
    353,920.76/488,517.37 = 240,809.12/x
  3. Step 3: Cross multiply
    353,920.76x = 488,517.37 × 240,809.12
  4. Step 4: Simplify right side
    353,920.76x = 117,639,434,929.81
  5. Step 5: Solve for x
    x = 117,639,434,929.81/353,920.76
  6. Step 6: Final answer
    x = 332,389.20

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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.