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Finding the Fourth Proportional to 258,514.60, 388,087.80 and 146,272.90

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Solution

The fourth proportional to 258,514.60, 388,087.80 and 146,272.90 is: 219,588.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,514.60 : 388,087.80 = 146,272.90 : x
  2. Step 2: Convert to fraction form
    258,514.60/388,087.80 = 146,272.90/x
  3. Step 3: Cross multiply
    258,514.60x = 388,087.80 × 146,272.90
  4. Step 4: Simplify right side
    258,514.60x = 56,766,727,960.62
  5. Step 5: Solve for x
    x = 56,766,727,960.62/258,514.60
  6. Step 6: Final answer
    x = 219,588.09

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1.5x scale

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.