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Finding the Fourth Proportional to 555,020.40, 832,166.10 and 217,857.90

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Solution

The fourth proportional to 555,020.40, 832,166.10 and 217,857.90 is: 326,643.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,020.40 : 832,166.10 = 217,857.90 : x
  2. Step 2: Convert to fraction form
    555,020.40/832,166.10 = 217,857.90/x
  3. Step 3: Cross multiply
    555,020.40x = 832,166.10 × 217,857.90
  4. Step 4: Simplify right side
    555,020.40x = 181,293,958,997.19
  5. Step 5: Solve for x
    x = 181,293,958,997.19/555,020.40
  6. Step 6: Final answer
    x = 326,643.78

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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.