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Finding the Fourth Proportional to 371,878.92, 513,172.08 and 202,111.92

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Solution

The fourth proportional to 371,878.92, 513,172.08 and 202,111.92 is: 278,903.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,878.92 : 513,172.08 = 202,111.92 : x
  2. Step 2: Convert to fraction form
    371,878.92/513,172.08 = 202,111.92/x
  3. Step 3: Cross multiply
    371,878.92x = 513,172.08 × 202,111.92
  4. Step 4: Simplify right side
    371,878.92x = 103,718,194,379.19
  5. Step 5: Solve for x
    x = 103,718,194,379.19/371,878.92
  6. Step 6: Final answer
    x = 278,903.13

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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.