Home / 642,161.05-963,286.45-257,909.93

Finding the Fourth Proportional to 642,161.05, 963,286.45 and 257,909.93

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Solution

The fourth proportional to 642,161.05, 963,286.45 and 257,909.93 is: 386,882.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,161.05 : 963,286.45 = 257,909.93 : x
  2. Step 2: Convert to fraction form
    642,161.05/963,286.45 = 257,909.93/x
  3. Step 3: Cross multiply
    642,161.05x = 963,286.45 × 257,909.93
  4. Step 4: Simplify right side
    642,161.05x = 248,441,140,889.45
  5. Step 5: Solve for x
    x = 248,441,140,889.45/642,161.05
  6. Step 6: Final answer
    x = 386,882.92

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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.