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Finding the Fourth Proportional to 581,721.59, 872,110.83 and 261,639.10

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Solution

The fourth proportional to 581,721.59, 872,110.83 and 261,639.10 is: 392,246.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,721.59 : 872,110.83 = 261,639.10 : x
  2. Step 2: Convert to fraction form
    581,721.59/872,110.83 = 261,639.10/x
  3. Step 3: Cross multiply
    581,721.59x = 872,110.83 × 261,639.10
  4. Step 4: Simplify right side
    581,721.59x = 228,178,288,300.90
  5. Step 5: Solve for x
    x = 228,178,288,300.90/581,721.59
  6. Step 6: Final answer
    x = 392,246.55

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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.