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Finding the Fourth Proportional to 386,544, 533,489.04 and 235,728.48

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Solution

The fourth proportional to 386,544, 533,489.04 and 235,728.48 is: 325,340.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,544 : 533,489.04 = 235,728.48 : x
  2. Step 2: Convert to fraction form
    386,544/533,489.04 = 235,728.48/x
  3. Step 3: Cross multiply
    386,544x = 533,489.04 × 235,728.48
  4. Step 4: Simplify right side
    386,544x = 125,758,560,495.86
  5. Step 5: Solve for x
    x = 125,758,560,495.86/386,544
  6. Step 6: Final answer
    x = 325,340.87

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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.