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Finding the Fourth Proportional to 288,520.40, 432,780.60 and 164,104.40

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Solution

The fourth proportional to 288,520.40, 432,780.60 and 164,104.40 is: 246,156.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,520.40 : 432,780.60 = 164,104.40 : x
  2. Step 2: Convert to fraction form
    288,520.40/432,780.60 = 164,104.40/x
  3. Step 3: Cross multiply
    288,520.40x = 432,780.60 × 164,104.40
  4. Step 4: Simplify right side
    288,520.40x = 71,021,200,694.64
  5. Step 5: Solve for x
    x = 71,021,200,694.64/288,520.40
  6. Step 6: Final answer
    x = 246,156.60

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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.