Home / 210,383.54-315,578.10-70,142.22

Finding the Fourth Proportional to 210,383.54, 315,578.10 and 70,142.22

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Solution

The fourth proportional to 210,383.54, 315,578.10 and 70,142.22 is: 105,214.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,383.54 : 315,578.10 = 70,142.22 : x
  2. Step 2: Convert to fraction form
    210,383.54/315,578.10 = 70,142.22/x
  3. Step 3: Cross multiply
    210,383.54x = 315,578.10 × 70,142.22
  4. Step 4: Simplify right side
    210,383.54x = 22,135,348,517.38
  5. Step 5: Solve for x
    x = 22,135,348,517.38/210,383.54
  6. Step 6: Final answer
    x = 105,214.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.