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Finding the Fourth Proportional to 258,045.30, 387,067.95 and 163,566.90

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Solution

The fourth proportional to 258,045.30, 387,067.95 and 163,566.90 is: 245,350.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,045.30 : 387,067.95 = 163,566.90 : x
  2. Step 2: Convert to fraction form
    258,045.30/387,067.95 = 163,566.90/x
  3. Step 3: Cross multiply
    258,045.30x = 387,067.95 × 163,566.90
  4. Step 4: Simplify right side
    258,045.30x = 63,311,504,670.86
  5. Step 5: Solve for x
    x = 63,311,504,670.86/258,045.30
  6. Step 6: Final answer
    x = 245,350.35

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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.