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Finding the Fourth Proportional to 371,862.87, 513,160.11 and 210,769.98

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Solution

The fourth proportional to 371,862.87, 513,160.11 and 210,769.98 is: 290,856.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,862.87 : 513,160.11 = 210,769.98 : x
  2. Step 2: Convert to fraction form
    371,862.87/513,160.11 = 210,769.98/x
  3. Step 3: Cross multiply
    371,862.87x = 513,160.11 × 210,769.98
  4. Step 4: Simplify right side
    371,862.87x = 108,158,746,121.50
  5. Step 5: Solve for x
    x = 108,158,746,121.50/371,862.87
  6. Step 6: Final answer
    x = 290,856.54

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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.