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Finding the Fourth Proportional to 354,721.77, 488,684.30 and 247,097.07

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Solution

The fourth proportional to 354,721.77, 488,684.30 and 247,097.07 is: 340,414.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,721.77 : 488,684.30 = 247,097.07 : x
  2. Step 2: Convert to fraction form
    354,721.77/488,684.30 = 247,097.07/x
  3. Step 3: Cross multiply
    354,721.77x = 488,684.30 × 247,097.07
  4. Step 4: Simplify right side
    354,721.77x = 120,752,457,449.52
  5. Step 5: Solve for x
    x = 120,752,457,449.52/354,721.77
  6. Step 6: Final answer
    x = 340,414.57

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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.