Home / 268,854.12-403,281.18-81,865.62

Finding the Fourth Proportional to 268,854.12, 403,281.18 and 81,865.62

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Solution

The fourth proportional to 268,854.12, 403,281.18 and 81,865.62 is: 122,798.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,854.12 : 403,281.18 = 81,865.62 : x
  2. Step 2: Convert to fraction form
    268,854.12/403,281.18 = 81,865.62/x
  3. Step 3: Cross multiply
    268,854.12x = 403,281.18 × 81,865.62
  4. Step 4: Simplify right side
    268,854.12x = 33,014,863,835.03
  5. Step 5: Solve for x
    x = 33,014,863,835.03/268,854.12
  6. Step 6: Final answer
    x = 122,798.43

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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.