Home / 398,720,105.20-598,347,652.20-139,934,825.20

Finding the Fourth Proportional to 398,720,105.20, 598,347,652.20 and 139,934,825.20

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Solution

The fourth proportional to 398,720,105.20, 598,347,652.20 and 139,934,825.20 is: 209,996,117.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,720,105.20 : 598,347,652.20 = 139,934,825.20 : x
  2. Step 2: Convert to fraction form
    398,720,105.20/598,347,652.20 = 139,934,825.20/x
  3. Step 3: Cross multiply
    398,720,105.20x = 598,347,652.20 × 139,934,825.20
  4. Step 4: Simplify right side
    398,720,105.20x = 83,729,674,119,437,392
  5. Step 5: Solve for x
    x = 83,729,674,119,437,392/398,720,105.20
  6. Step 6: Final answer
    x = 209,996,117.65

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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.