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Finding the Fourth Proportional to 243,511.17, 365,265.54 and 66,017.90

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Solution

The fourth proportional to 243,511.17, 365,265.54 and 66,017.90 is: 99,026.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,511.17 : 365,265.54 = 66,017.90 : x
  2. Step 2: Convert to fraction form
    243,511.17/365,265.54 = 66,017.90/x
  3. Step 3: Cross multiply
    243,511.17x = 365,265.54 × 66,017.90
  4. Step 4: Simplify right side
    243,511.17x = 24,114,062,066.84
  5. Step 5: Solve for x
    x = 24,114,062,066.84/243,511.17
  6. Step 6: Final answer
    x = 99,026.51

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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.