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Finding the Fourth Proportional to 666,363.36, 999,543.82 and 217,083.69

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Solution

The fourth proportional to 666,363.36, 999,543.82 and 217,083.69 is: 325,625.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,363.36 : 999,543.82 = 217,083.69 : x
  2. Step 2: Convert to fraction form
    666,363.36/999,543.82 = 217,083.69/x
  3. Step 3: Cross multiply
    666,363.36x = 999,543.82 × 217,083.69
  4. Step 4: Simplify right side
    666,363.36x = 216,984,662,718.45
  5. Step 5: Solve for x
    x = 216,984,662,718.45/666,363.36
  6. Step 6: Final answer
    x = 325,625.14

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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.