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Finding the Fourth Proportional to 351,870.50, 485,569.46 and 208,545.46

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Solution

The fourth proportional to 351,870.50, 485,569.46 and 208,545.46 is: 287,785.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,870.50 : 485,569.46 = 208,545.46 : x
  2. Step 2: Convert to fraction form
    351,870.50/485,569.46 = 208,545.46/x
  3. Step 3: Cross multiply
    351,870.50x = 485,569.46 × 208,545.46
  4. Step 4: Simplify right side
    351,870.50x = 101,263,305,705.09
  5. Step 5: Solve for x
    x = 101,263,305,705.09/351,870.50
  6. Step 6: Final answer
    x = 287,785.72

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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.