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Finding the Fourth Proportional to 288,642.96, 433,004.40 and 88,979.04

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Solution

The fourth proportional to 288,642.96, 433,004.40 and 88,979.04 is: 133,480.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,642.96 : 433,004.40 = 88,979.04 : x
  2. Step 2: Convert to fraction form
    288,642.96/433,004.40 = 88,979.04/x
  3. Step 3: Cross multiply
    288,642.96x = 433,004.40 × 88,979.04
  4. Step 4: Simplify right side
    288,642.96x = 38,528,315,827.78
  5. Step 5: Solve for x
    x = 38,528,315,827.78/288,642.96
  6. Step 6: Final answer
    x = 133,480.88

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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.