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Finding the Fourth Proportional to 288,980.80, 432,952.80 and 247,508.80

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Solution

The fourth proportional to 288,980.80, 432,952.80 and 247,508.80 is: 370,819.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,980.80 : 432,952.80 = 247,508.80 : x
  2. Step 2: Convert to fraction form
    288,980.80/432,952.80 = 247,508.80/x
  3. Step 3: Cross multiply
    288,980.80x = 432,952.80 × 247,508.80
  4. Step 4: Simplify right side
    288,980.80x = 107,159,627,984.64
  5. Step 5: Solve for x
    x = 107,159,627,984.64/288,980.80
  6. Step 6: Final answer
    x = 370,819.20

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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.