Home / 371,885.07-513,199.60-202,119.20

Finding the Fourth Proportional to 371,885.07, 513,199.60 and 202,119.20

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Solution

The fourth proportional to 371,885.07, 513,199.60 and 202,119.20 is: 278,923.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,885.07 : 513,199.60 = 202,119.20 : x
  2. Step 2: Convert to fraction form
    371,885.07/513,199.60 = 202,119.20/x
  3. Step 3: Cross multiply
    371,885.07x = 513,199.60 × 202,119.20
  4. Step 4: Simplify right side
    371,885.07x = 103,727,491,445.52
  5. Step 5: Solve for x
    x = 103,727,491,445.52/371,885.07
  6. Step 6: Final answer
    x = 278,923.51

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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.