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Finding the Fourth Proportional to 492,221.21, 679,265.25 and 265,866.71

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Solution

The fourth proportional to 492,221.21, 679,265.25 and 265,866.71 is: 366,896.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,221.21 : 679,265.25 = 265,866.71 : x
  2. Step 2: Convert to fraction form
    492,221.21/679,265.25 = 265,866.71/x
  3. Step 3: Cross multiply
    492,221.21x = 679,265.25 × 265,866.71
  4. Step 4: Simplify right side
    492,221.21x = 180,594,017,234.83
  5. Step 5: Solve for x
    x = 180,594,017,234.83/492,221.21
  6. Step 6: Final answer
    x = 366,896.05

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1.5x scale

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.