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Finding the Fourth Proportional to 221,070.77, 331,670.73 and 71,307.74

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Solution

The fourth proportional to 221,070.77, 331,670.73 and 71,307.74 is: 106,982.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,070.77 : 331,670.73 = 71,307.74 : x
  2. Step 2: Convert to fraction form
    221,070.77/331,670.73 = 71,307.74/x
  3. Step 3: Cross multiply
    221,070.77x = 331,670.73 × 71,307.74
  4. Step 4: Simplify right side
    221,070.77x = 23,650,690,875.93
  5. Step 5: Solve for x
    x = 23,650,690,875.93/221,070.77
  6. Step 6: Final answer
    x = 106,982.44

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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.