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Finding the Fourth Proportional to 288,995.10, 433,363.05 and 131,142.30

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Solution

The fourth proportional to 288,995.10, 433,363.05 and 131,142.30 is: 196,654.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,995.10 : 433,363.05 = 131,142.30 : x
  2. Step 2: Convert to fraction form
    288,995.10/433,363.05 = 131,142.30/x
  3. Step 3: Cross multiply
    288,995.10x = 433,363.05 × 131,142.30
  4. Step 4: Simplify right side
    288,995.10x = 56,832,227,112.02
  5. Step 5: Solve for x
    x = 56,832,227,112.02/288,995.10
  6. Step 6: Final answer
    x = 196,654.64

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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.