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Finding the Fourth Proportional to 545,123.80, 817,724.10 and 308,579.80

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Solution

The fourth proportional to 545,123.80, 817,724.10 and 308,579.80 is: 462,891.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,123.80 : 817,724.10 = 308,579.80 : x
  2. Step 2: Convert to fraction form
    545,123.80/817,724.10 = 308,579.80/x
  3. Step 3: Cross multiply
    545,123.80x = 817,724.10 × 308,579.80
  4. Step 4: Simplify right side
    545,123.80x = 252,333,139,233.18
  5. Step 5: Solve for x
    x = 252,333,139,233.18/545,123.80
  6. Step 6: Final answer
    x = 462,891.44

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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.