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Finding the Fourth Proportional to 488,805.80, 733,864.80 and 312,096.20

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Solution

The fourth proportional to 488,805.80, 733,864.80 and 312,096.20 is: 468,563.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,805.80 : 733,864.80 = 312,096.20 : x
  2. Step 2: Convert to fraction form
    488,805.80/733,864.80 = 312,096.20/x
  3. Step 3: Cross multiply
    488,805.80x = 733,864.80 × 312,096.20
  4. Step 4: Simplify right side
    488,805.80x = 229,036,415,393.76
  5. Step 5: Solve for x
    x = 229,036,415,393.76/488,805.80
  6. Step 6: Final answer
    x = 468,563.21

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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.