Home / 371,840.12-513,142.62-202,074.28

Finding the Fourth Proportional to 371,840.12, 513,142.62 and 202,074.28

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Solution

The fourth proportional to 371,840.12, 513,142.62 and 202,074.28 is: 278,864.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,840.12 : 513,142.62 = 202,074.28 : x
  2. Step 2: Convert to fraction form
    371,840.12/513,142.62 = 202,074.28/x
  3. Step 3: Cross multiply
    371,840.12x = 513,142.62 × 202,074.28
  4. Step 4: Simplify right side
    371,840.12x = 103,692,925,473.81
  5. Step 5: Solve for x
    x = 103,692,925,473.81/371,840.12
  6. Step 6: Final answer
    x = 278,864.27

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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.