Home / 426,930.24-640,301.03-123,258.42

Finding the Fourth Proportional to 426,930.24, 640,301.03 and 123,258.42

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Solution

The fourth proportional to 426,930.24, 640,301.03 and 123,258.42 is: 184,860.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,930.24 : 640,301.03 = 123,258.42 : x
  2. Step 2: Convert to fraction form
    426,930.24/640,301.03 = 123,258.42/x
  3. Step 3: Cross multiply
    426,930.24x = 640,301.03 × 123,258.42
  4. Step 4: Simplify right side
    426,930.24x = 78,922,493,282.17
  5. Step 5: Solve for x
    x = 78,922,493,282.17/426,930.24
  6. Step 6: Final answer
    x = 184,860.40

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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.