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Finding the Fourth Proportional to 286,999.40, 396,060.98 and 157,934.30

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Solution

The fourth proportional to 286,999.40, 396,060.98 and 157,934.30 is: 217,950.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,999.40 : 396,060.98 = 157,934.30 : x
  2. Step 2: Convert to fraction form
    286,999.40/396,060.98 = 157,934.30/x
  3. Step 3: Cross multiply
    286,999.40x = 396,060.98 × 157,934.30
  4. Step 4: Simplify right side
    286,999.40x = 62,551,612,843.94
  5. Step 5: Solve for x
    x = 62,551,612,843.94/286,999.40
  6. Step 6: Final answer
    x = 217,950.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.