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Finding the Fourth Proportional to 371,840.16, 513,139.20 and 202,074.30

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Solution

The fourth proportional to 371,840.16, 513,139.20 and 202,074.30 is: 278,862.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,840.16 : 513,139.20 = 202,074.30 : x
  2. Step 2: Convert to fraction form
    371,840.16/513,139.20 = 202,074.30/x
  3. Step 3: Cross multiply
    371,840.16x = 513,139.20 × 202,074.30
  4. Step 4: Simplify right side
    371,840.16x = 103,692,244,642.56
  5. Step 5: Solve for x
    x = 103,692,244,642.56/371,840.16
  6. Step 6: Final answer
    x = 278,862.41

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.