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Finding the Fourth Proportional to 546,621.80, 820,278.30 and 321,981.80

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Solution

The fourth proportional to 546,621.80, 820,278.30 and 321,981.80 is: 483,176.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    546,621.80 : 820,278.30 = 321,981.80 : x
  2. Step 2: Convert to fraction form
    546,621.80/820,278.30 = 321,981.80/x
  3. Step 3: Cross multiply
    546,621.80x = 820,278.30 × 321,981.80
  4. Step 4: Simplify right side
    546,621.80x = 264,114,683,534.94
  5. Step 5: Solve for x
    x = 264,114,683,534.94/546,621.80
  6. Step 6: Final answer
    x = 483,176.27

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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.