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Finding the Fourth Proportional to 288,445.15, 432,668.06 and 75,212.88

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Solution

The fourth proportional to 288,445.15, 432,668.06 and 75,212.88 is: 112,819.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,445.15 : 432,668.06 = 75,212.88 : x
  2. Step 2: Convert to fraction form
    288,445.15/432,668.06 = 75,212.88/x
  3. Step 3: Cross multiply
    288,445.15x = 432,668.06 × 75,212.88
  4. Step 4: Simplify right side
    288,445.15x = 32,542,209,160.09
  5. Step 5: Solve for x
    x = 32,542,209,160.09/288,445.15
  6. Step 6: Final answer
    x = 112,819.40

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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.