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Finding the Fourth Proportional to 403,499.68, 556,808.24 and 231,408.75

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Solution

The fourth proportional to 403,499.68, 556,808.24 and 231,408.75 is: 319,331.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,499.68 : 556,808.24 = 231,408.75 : x
  2. Step 2: Convert to fraction form
    403,499.68/556,808.24 = 231,408.75/x
  3. Step 3: Cross multiply
    403,499.68x = 556,808.24 × 231,408.75
  4. Step 4: Simplify right side
    403,499.68x = 128,850,301,474.65
  5. Step 5: Solve for x
    x = 128,850,301,474.65/403,499.68
  6. Step 6: Final answer
    x = 319,331.85

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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.