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Finding the Fourth Proportional to 288,408.60, 432,613.88 and 88,727.64

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Solution

The fourth proportional to 288,408.60, 432,613.88 and 88,727.64 is: 133,091.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,408.60 : 432,613.88 = 88,727.64 : x
  2. Step 2: Convert to fraction form
    288,408.60/432,613.88 = 88,727.64/x
  3. Step 3: Cross multiply
    288,408.60x = 432,613.88 × 88,727.64
  4. Step 4: Simplify right side
    288,408.60x = 38,384,808,603.64
  5. Step 5: Solve for x
    x = 38,384,808,603.64/288,408.60
  6. Step 6: Final answer
    x = 133,091.76

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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.