Home / 403,928.64-557,424.18-231,800.70

Finding the Fourth Proportional to 403,928.64, 557,424.18 and 231,800.70

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Solution

The fourth proportional to 403,928.64, 557,424.18 and 231,800.70 is: 319,886.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,928.64 : 557,424.18 = 231,800.70 : x
  2. Step 2: Convert to fraction form
    403,928.64/557,424.18 = 231,800.70/x
  3. Step 3: Cross multiply
    403,928.64x = 557,424.18 × 231,800.70
  4. Step 4: Simplify right side
    403,928.64x = 129,211,315,120.93
  5. Step 5: Solve for x
    x = 129,211,315,120.93/403,928.64
  6. Step 6: Final answer
    x = 319,886.49

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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.