Home / 289,330.07-398,905.35-198,528.35

Finding the Fourth Proportional to 289,330.07, 398,905.35 and 198,528.35

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Solution

The fourth proportional to 289,330.07, 398,905.35 and 198,528.35 is: 273,715.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,330.07 : 398,905.35 = 198,528.35 : x
  2. Step 2: Convert to fraction form
    289,330.07/398,905.35 = 198,528.35/x
  3. Step 3: Cross multiply
    289,330.07x = 398,905.35 × 198,528.35
  4. Step 4: Simplify right side
    289,330.07x = 79,194,018,947.15
  5. Step 5: Solve for x
    x = 79,194,018,947.15/289,330.07
  6. Step 6: Final answer
    x = 273,715.14

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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.