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Finding the Fourth Proportional to 288,864.87, 433,399.87 and 128,926.25

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Solution

The fourth proportional to 288,864.87, 433,399.87 and 128,926.25 is: 193,435.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,864.87 : 433,399.87 = 128,926.25 : x
  2. Step 2: Convert to fraction form
    288,864.87/433,399.87 = 128,926.25/x
  3. Step 3: Cross multiply
    288,864.87x = 433,399.87 × 128,926.25
  4. Step 4: Simplify right side
    288,864.87x = 55,876,618,883.79
  5. Step 5: Solve for x
    x = 55,876,618,883.79/288,864.87
  6. Step 6: Final answer
    x = 193,435.15

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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.