Home / 289,429.20-433,981.26-198,347.40

Finding the Fourth Proportional to 289,429.20, 433,981.26 and 198,347.40

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Solution

The fourth proportional to 289,429.20, 433,981.26 and 198,347.40 is: 297,409.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,429.20 : 433,981.26 = 198,347.40 : x
  2. Step 2: Convert to fraction form
    289,429.20/433,981.26 = 198,347.40/x
  3. Step 3: Cross multiply
    289,429.20x = 433,981.26 × 198,347.40
  4. Step 4: Simplify right side
    289,429.20x = 86,079,054,569.72
  5. Step 5: Solve for x
    x = 86,079,054,569.72/289,429.20
  6. Step 6: Final answer
    x = 297,409.71

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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.