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Finding the Fourth Proportional to 294,090, 441,135 and 72,474

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Solution

The fourth proportional to 294,090, 441,135 and 72,474 is: 108,711

Step by Step Solution

  1. Step 1: Write the proportion equation
    294,090 : 441,135 = 72,474 : x
  2. Step 2: Convert to fraction form
    294,090/441,135 = 72,474/x
  3. Step 3: Cross multiply
    294,090x = 441,135 × 72,474
  4. Step 4: Simplify right side
    294,090x = 31,970,817,990
  5. Step 5: Solve for x
    x = 31,970,817,990/294,090
  6. Step 6: Final answer
    x = 108,711

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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.