Home / 288,979.20-433,460.70-131,207.40

Finding the Fourth Proportional to 288,979.20, 433,460.70 and 131,207.40

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Solution

The fourth proportional to 288,979.20, 433,460.70 and 131,207.40 is: 196,807.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,979.20 : 433,460.70 = 131,207.40 : x
  2. Step 2: Convert to fraction form
    288,979.20/433,460.70 = 131,207.40/x
  3. Step 3: Cross multiply
    288,979.20x = 433,460.70 × 131,207.40
  4. Step 4: Simplify right side
    288,979.20x = 56,873,251,449.18
  5. Step 5: Solve for x
    x = 56,873,251,449.18/288,979.20
  6. Step 6: Final answer
    x = 196,807.42

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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.