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Finding the Fourth Proportional to 440,574, 608,043.96 and 261,726

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Solution

The fourth proportional to 440,574, 608,043.96 and 261,726 is: 361,212.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,574 : 608,043.96 = 261,726 : x
  2. Step 2: Convert to fraction form
    440,574/608,043.96 = 261,726/x
  3. Step 3: Cross multiply
    440,574x = 608,043.96 × 261,726
  4. Step 4: Simplify right side
    440,574x = 159,140,913,474.96
  5. Step 5: Solve for x
    x = 159,140,913,474.96/440,574
  6. Step 6: Final answer
    x = 361,212.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.