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Finding the Fourth Proportional to 643,726.48, 965,622.48 and 217,277.86

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Solution

The fourth proportional to 643,726.48, 965,622.48 and 217,277.86 is: 325,927.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,726.48 : 965,622.48 = 217,277.86 : x
  2. Step 2: Convert to fraction form
    643,726.48/965,622.48 = 217,277.86/x
  3. Step 3: Cross multiply
    643,726.48x = 965,622.48 × 217,277.86
  4. Step 4: Simplify right side
    643,726.48x = 209,808,386,022.29
  5. Step 5: Solve for x
    x = 209,808,386,022.29/643,726.48
  6. Step 6: Final answer
    x = 325,927.85

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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.