Home / 454,628.70-681,970.35-139,088.34

Finding the Fourth Proportional to 454,628.70, 681,970.35 and 139,088.34

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Solution

The fourth proportional to 454,628.70, 681,970.35 and 139,088.34 is: 208,640.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,628.70 : 681,970.35 = 139,088.34 : x
  2. Step 2: Convert to fraction form
    454,628.70/681,970.35 = 139,088.34/x
  3. Step 3: Cross multiply
    454,628.70x = 681,970.35 × 139,088.34
  4. Step 4: Simplify right side
    454,628.70x = 94,854,123,910.72
  5. Step 5: Solve for x
    x = 94,854,123,910.72/454,628.70
  6. Step 6: Final answer
    x = 208,640.86

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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.