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Finding the Fourth Proportional to 288,966.20, 432,866.10 and 200,319.80

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Solution

The fourth proportional to 288,966.20, 432,866.10 and 200,319.80 is: 300,075.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,966.20 : 432,866.10 = 200,319.80 : x
  2. Step 2: Convert to fraction form
    288,966.20/432,866.10 = 200,319.80/x
  3. Step 3: Cross multiply
    288,966.20x = 432,866.10 × 200,319.80
  4. Step 4: Simplify right side
    288,966.20x = 86,711,650,578.78
  5. Step 5: Solve for x
    x = 86,711,650,578.78/288,966.20
  6. Step 6: Final answer
    x = 300,075.41

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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.