Home / 371,895.78-513,194.48-202,128.42

Finding the Fourth Proportional to 371,895.78, 513,194.48 and 202,128.42

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Solution

The fourth proportional to 371,895.78, 513,194.48 and 202,128.42 is: 278,925.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,895.78 : 513,194.48 = 202,128.42 : x
  2. Step 2: Convert to fraction form
    371,895.78/513,194.48 = 202,128.42/x
  3. Step 3: Cross multiply
    371,895.78x = 513,194.48 × 202,128.42
  4. Step 4: Simplify right side
    371,895.78x = 103,731,189,395.12
  5. Step 5: Solve for x
    x = 103,731,189,395.12/371,895.78
  6. Step 6: Final answer
    x = 278,925.43

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1.5x scale

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.