Home / 398,119.17-597,435.68-145,378.52

Finding the Fourth Proportional to 398,119.17, 597,435.68 and 145,378.52

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Solution

The fourth proportional to 398,119.17, 597,435.68 and 145,378.52 is: 218,161.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,119.17 : 597,435.68 = 145,378.52 : x
  2. Step 2: Convert to fraction form
    398,119.17/597,435.68 = 145,378.52/x
  3. Step 3: Cross multiply
    398,119.17x = 597,435.68 × 145,378.52
  4. Step 4: Simplify right side
    398,119.17x = 86,854,311,239.52
  5. Step 5: Solve for x
    x = 86,854,311,239.52/398,119.17
  6. Step 6: Final answer
    x = 218,161.59

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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.