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Finding the Fourth Proportional to 397,999.30, 596,998.95 and 131,800.90

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Solution

The fourth proportional to 397,999.30, 596,998.95 and 131,800.90 is: 197,701.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,999.30 : 596,998.95 = 131,800.90 : x
  2. Step 2: Convert to fraction form
    397,999.30/596,998.95 = 131,800.90/x
  3. Step 3: Cross multiply
    397,999.30x = 596,998.95 × 131,800.90
  4. Step 4: Simplify right side
    397,999.30x = 78,684,998,909.06
  5. Step 5: Solve for x
    x = 78,684,998,909.06/397,999.30
  6. Step 6: Final answer
    x = 197,701.35

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Similar ratio
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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.