Home / 286,258,616.64-428,990,667.24-130,431,603.96

Finding the Fourth Proportional to 286,258,616.64, 428,990,667.24 and 130,431,603.96

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Solution

The fourth proportional to 286,258,616.64, 428,990,667.24 and 130,431,603.96 is: 195,466,398.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,258,616.64 : 428,990,667.24 = 130,431,603.96 : x
  2. Step 2: Convert to fraction form
    286,258,616.64/428,990,667.24 = 130,431,603.96/x
  3. Step 3: Cross multiply
    286,258,616.64x = 428,990,667.24 × 130,431,603.96
  4. Step 4: Simplify right side
    286,258,616.64x = 55,953,940,811,983,824
  5. Step 5: Solve for x
    x = 55,953,940,811,983,824/286,258,616.64
  6. Step 6: Final answer
    x = 195,466,398.42

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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.