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Finding the Fourth Proportional to 270,421.20, 404,854.20 and 262,645.20

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Solution

The fourth proportional to 270,421.20, 404,854.20 and 262,645.20 is: 393,212.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,421.20 : 404,854.20 = 262,645.20 : x
  2. Step 2: Convert to fraction form
    270,421.20/404,854.20 = 262,645.20/x
  3. Step 3: Cross multiply
    270,421.20x = 404,854.20 × 262,645.20
  4. Step 4: Simplify right side
    270,421.20x = 106,333,012,329.84
  5. Step 5: Solve for x
    x = 106,333,012,329.84/270,421.20
  6. Step 6: Final answer
    x = 393,212.56

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1.5x scale

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.