Home / 559,945.40-839,917.88-139,221.28

Finding the Fourth Proportional to 559,945.40, 839,917.88 and 139,221.28

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Solution

The fourth proportional to 559,945.40, 839,917.88 and 139,221.28 is: 208,831.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,945.40 : 839,917.88 = 139,221.28 : x
  2. Step 2: Convert to fraction form
    559,945.40/839,917.88 = 139,221.28/x
  3. Step 3: Cross multiply
    559,945.40x = 839,917.88 × 139,221.28
  4. Step 4: Simplify right side
    559,945.40x = 116,934,442,348.49
  5. Step 5: Solve for x
    x = 116,934,442,348.49/559,945.40
  6. Step 6: Final answer
    x = 208,831.87

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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.