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Finding the Fourth Proportional to 449,951.73, 621,089.76 and 259,041.21

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Solution

The fourth proportional to 449,951.73, 621,089.76 and 259,041.21 is: 357,566.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,951.73 : 621,089.76 = 259,041.21 : x
  2. Step 2: Convert to fraction form
    449,951.73/621,089.76 = 259,041.21/x
  3. Step 3: Cross multiply
    449,951.73x = 621,089.76 × 259,041.21
  4. Step 4: Simplify right side
    449,951.73x = 160,887,842,949.01
  5. Step 5: Solve for x
    x = 160,887,842,949.01/449,951.73
  6. Step 6: Final answer
    x = 357,566.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.