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Finding the Fourth Proportional to 536,644.13, 805,335.15 and 221,100.98

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Solution

The fourth proportional to 536,644.13, 805,335.15 and 221,100.98 is: 331,803.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,644.13 : 805,335.15 = 221,100.98 : x
  2. Step 2: Convert to fraction form
    536,644.13/805,335.15 = 221,100.98/x
  3. Step 3: Cross multiply
    536,644.13x = 805,335.15 × 221,100.98
  4. Step 4: Simplify right side
    536,644.13x = 178,060,390,893.45
  5. Step 5: Solve for x
    x = 178,060,390,893.45/536,644.13
  6. Step 6: Final answer
    x = 331,803.48

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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.