Home / 209,423.73-288,846.36-145,000.79

Finding the Fourth Proportional to 209,423.73, 288,846.36 and 145,000.79

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Solution

The fourth proportional to 209,423.73, 288,846.36 and 145,000.79 is: 199,991.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,423.73 : 288,846.36 = 145,000.79 : x
  2. Step 2: Convert to fraction form
    209,423.73/288,846.36 = 145,000.79/x
  3. Step 3: Cross multiply
    209,423.73x = 288,846.36 × 145,000.79
  4. Step 4: Simplify right side
    209,423.73x = 41,882,949,488.15
  5. Step 5: Solve for x
    x = 41,882,949,488.15/209,423.73
  6. Step 6: Final answer
    x = 199,991.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.