Home / 642,145.28-963,148.80-192,819.20

Finding the Fourth Proportional to 642,145.28, 963,148.80 and 192,819.20

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Solution

The fourth proportional to 642,145.28, 963,148.80 and 192,819.20 is: 289,208.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,145.28 : 963,148.80 = 192,819.20 : x
  2. Step 2: Convert to fraction form
    642,145.28/963,148.80 = 192,819.20/x
  3. Step 3: Cross multiply
    642,145.28x = 963,148.80 × 192,819.20
  4. Step 4: Simplify right side
    642,145.28x = 185,713,581,096.96
  5. Step 5: Solve for x
    x = 185,713,581,096.96/642,145.28
  6. Step 6: Final answer
    x = 289,208.05

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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.