Home / 287,956.20-431,351.10-163,151.40

Finding the Fourth Proportional to 287,956.20, 431,351.10 and 163,151.40

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Solution

The fourth proportional to 287,956.20, 431,351.10 and 163,151.40 is: 244,396.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,956.20 : 431,351.10 = 163,151.40 : x
  2. Step 2: Convert to fraction form
    287,956.20/431,351.10 = 163,151.40/x
  3. Step 3: Cross multiply
    287,956.20x = 431,351.10 × 163,151.40
  4. Step 4: Simplify right side
    287,956.20x = 70,375,535,856.54
  5. Step 5: Solve for x
    x = 70,375,535,856.54/287,956.20
  6. Step 6: Final answer
    x = 244,396.67

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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.