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Finding the Fourth Proportional to 353,685.15, 488,523.96 and 256,734.36

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Solution

The fourth proportional to 353,685.15, 488,523.96 and 256,734.36 is: 354,611.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,685.15 : 488,523.96 = 256,734.36 : x
  2. Step 2: Convert to fraction form
    353,685.15/488,523.96 = 256,734.36/x
  3. Step 3: Cross multiply
    353,685.15x = 488,523.96 × 256,734.36
  4. Step 4: Simplify right side
    353,685.15x = 125,420,886,215.27
  5. Step 5: Solve for x
    x = 125,420,886,215.27/353,685.15
  6. Step 6: Final answer
    x = 354,611.68

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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.