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Finding the Fourth Proportional to 371,835.68, 513,136.50 and 202,069.80

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Solution

The fourth proportional to 371,835.68, 513,136.50 and 202,069.80 is: 278,858.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,835.68 : 513,136.50 = 202,069.80 : x
  2. Step 2: Convert to fraction form
    371,835.68/513,136.50 = 202,069.80/x
  3. Step 3: Cross multiply
    371,835.68x = 513,136.50 × 202,069.80
  4. Step 4: Simplify right side
    371,835.68x = 103,689,389,927.70
  5. Step 5: Solve for x
    x = 103,689,389,927.70/371,835.68
  6. Step 6: Final answer
    x = 278,858.10

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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.