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Finding the Fourth Proportional to 354,298.89, 488,778.15 and 225,168.18

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Solution

The fourth proportional to 354,298.89, 488,778.15 and 225,168.18 is: 310,634.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,298.89 : 488,778.15 = 225,168.18 : x
  2. Step 2: Convert to fraction form
    354,298.89/488,778.15 = 225,168.18/x
  3. Step 3: Cross multiply
    354,298.89x = 488,778.15 × 225,168.18
  4. Step 4: Simplify right side
    354,298.89x = 110,057,286,459.27
  5. Step 5: Solve for x
    x = 110,057,286,459.27/354,298.89
  6. Step 6: Final answer
    x = 310,634.01

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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.