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Finding the Fourth Proportional to 400,710, 552,997.08 and 221,862

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Solution

The fourth proportional to 400,710, 552,997.08 and 221,862 is: 306,179.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,710 : 552,997.08 = 221,862 : x
  2. Step 2: Convert to fraction form
    400,710/552,997.08 = 221,862/x
  3. Step 3: Cross multiply
    400,710x = 552,997.08 × 221,862
  4. Step 4: Simplify right side
    400,710x = 122,689,038,162.96
  5. Step 5: Solve for x
    x = 122,689,038,162.96/400,710
  6. Step 6: Final answer
    x = 306,179.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.