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Finding the Fourth Proportional to 543,986.86, 816,143.29 and 219,607.95

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Solution

The fourth proportional to 543,986.86, 816,143.29 and 219,607.95 is: 329,477.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,986.86 : 816,143.29 = 219,607.95 : x
  2. Step 2: Convert to fraction form
    543,986.86/816,143.29 = 219,607.95/x
  3. Step 3: Cross multiply
    543,986.86x = 816,143.29 × 219,607.95
  4. Step 4: Simplify right side
    543,986.86x = 179,231,552,831.46
  5. Step 5: Solve for x
    x = 179,231,552,831.46/543,986.86
  6. Step 6: Final answer
    x = 329,477.72

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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.