Home / 215,511,331.80-323,266,997.70-198,883,133.40

Finding the Fourth Proportional to 215,511,331.80, 323,266,997.70 and 198,883,133.40

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Solution

The fourth proportional to 215,511,331.80, 323,266,997.70 and 198,883,133.40 is: 298,324,700.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,511,331.80 : 323,266,997.70 = 198,883,133.40 : x
  2. Step 2: Convert to fraction form
    215,511,331.80/323,266,997.70 = 198,883,133.40/x
  3. Step 3: Cross multiply
    215,511,331.80x = 323,266,997.70 × 198,883,133.40
  4. Step 4: Simplify right side
    215,511,331.80x = 64,292,353,427,386,592
  5. Step 5: Solve for x
    x = 64,292,353,427,386,592/215,511,331.80
  6. Step 6: Final answer
    x = 298,324,700.10

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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.