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Finding the Fourth Proportional to 288,693.05, 433,288.80 and 255,062.48

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Solution

The fourth proportional to 288,693.05, 433,288.80 and 255,062.48 is: 382,813.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,693.05 : 433,288.80 = 255,062.48 : x
  2. Step 2: Convert to fraction form
    288,693.05/433,288.80 = 255,062.48/x
  3. Step 3: Cross multiply
    288,693.05x = 433,288.80 × 255,062.48
  4. Step 4: Simplify right side
    288,693.05x = 110,515,713,717.78
  5. Step 5: Solve for x
    x = 110,515,713,717.78/288,693.05
  6. Step 6: Final answer
    x = 382,813.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.