Home / 303,526.20-455,807.70-198,809.40

Finding the Fourth Proportional to 303,526.20, 455,807.70 and 198,809.40

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Solution

The fourth proportional to 303,526.20, 455,807.70 and 198,809.40 is: 298,553.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,526.20 : 455,807.70 = 198,809.40 : x
  2. Step 2: Convert to fraction form
    303,526.20/455,807.70 = 198,809.40/x
  3. Step 3: Cross multiply
    303,526.20x = 455,807.70 × 198,809.40
  4. Step 4: Simplify right side
    303,526.20x = 90,618,855,352.38
  5. Step 5: Solve for x
    x = 90,618,855,352.38/303,526.20
  6. Step 6: Final answer
    x = 298,553.65

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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.