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Finding the Fourth Proportional to 378,061.43, 566,501.55 and 321,669.63

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Solution

The fourth proportional to 378,061.43, 566,501.55 and 321,669.63 is: 482,001.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,061.43 : 566,501.55 = 321,669.63 : x
  2. Step 2: Convert to fraction form
    378,061.43/566,501.55 = 321,669.63/x
  3. Step 3: Cross multiply
    378,061.43x = 566,501.55 × 321,669.63
  4. Step 4: Simplify right side
    378,061.43x = 182,226,342,776.67
  5. Step 5: Solve for x
    x = 182,226,342,776.67/378,061.43
  6. Step 6: Final answer
    x = 482,001.95

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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.