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Finding the Fourth Proportional to 258,496.80, 386,870.40 and 258,496.80

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Solution

The fourth proportional to 258,496.80, 386,870.40 and 258,496.80 is: 386,870.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,496.80 : 386,870.40 = 258,496.80 : x
  2. Step 2: Convert to fraction form
    258,496.80/386,870.40 = 258,496.80/x
  3. Step 3: Cross multiply
    258,496.80x = 386,870.40 × 258,496.80
  4. Step 4: Simplify right side
    258,496.80x = 100,004,760,414.72
  5. Step 5: Solve for x
    x = 100,004,760,414.72/258,496.80
  6. Step 6: Final answer
    x = 386,870.40

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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.