Home / 401,405.18-553,934.58-231,635.66

Finding the Fourth Proportional to 401,405.18, 553,934.58 and 231,635.66

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Solution

The fourth proportional to 401,405.18, 553,934.58 and 231,635.66 is: 319,654.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,405.18 : 553,934.58 = 231,635.66 : x
  2. Step 2: Convert to fraction form
    401,405.18/553,934.58 = 231,635.66/x
  3. Step 3: Cross multiply
    401,405.18x = 553,934.58 × 231,635.66
  4. Step 4: Simplify right side
    401,405.18x = 128,311,002,035.12
  5. Step 5: Solve for x
    x = 128,311,002,035.12/401,405.18
  6. Step 6: Final answer
    x = 319,654.57

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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.