Home / 401,272.40-553,778.50-238,025.71

Finding the Fourth Proportional to 401,272.40, 553,778.50 and 238,025.71

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Solution

The fourth proportional to 401,272.40, 553,778.50 and 238,025.71 is: 328,488.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,272.40 : 553,778.50 = 238,025.71 : x
  2. Step 2: Convert to fraction form
    401,272.40/553,778.50 = 238,025.71/x
  3. Step 3: Cross multiply
    401,272.40x = 553,778.50 × 238,025.71
  4. Step 4: Simplify right side
    401,272.40x = 131,813,520,645.24
  5. Step 5: Solve for x
    x = 131,813,520,645.24/401,272.40
  6. Step 6: Final answer
    x = 328,488.88

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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.