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Finding the Fourth Proportional to 294,086, 441,129 and 72,470

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Solution

The fourth proportional to 294,086, 441,129 and 72,470 is: 108,705

Step by Step Solution

  1. Step 1: Write the proportion equation
    294,086 : 441,129 = 72,470 : x
  2. Step 2: Convert to fraction form
    294,086/441,129 = 72,470/x
  3. Step 3: Cross multiply
    294,086x = 441,129 × 72,470
  4. Step 4: Simplify right side
    294,086x = 31,968,618,630
  5. Step 5: Solve for x
    x = 31,968,618,630/294,086
  6. Step 6: Final answer
    x = 108,705

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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.