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Finding the Fourth Proportional to 321,063.60, 481,595.40 and 187,875.30

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Solution

The fourth proportional to 321,063.60, 481,595.40 and 187,875.30 is: 281,812.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,063.60 : 481,595.40 = 187,875.30 : x
  2. Step 2: Convert to fraction form
    321,063.60/481,595.40 = 187,875.30/x
  3. Step 3: Cross multiply
    321,063.60x = 481,595.40 × 187,875.30
  4. Step 4: Simplify right side
    321,063.60x = 90,479,880,253.62
  5. Step 5: Solve for x
    x = 90,479,880,253.62/321,063.60
  6. Step 6: Final answer
    x = 281,812.95

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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.