Home / 351,875.20-485,652.78-200,972.20

Finding the Fourth Proportional to 351,875.20, 485,652.78 and 200,972.20

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Solution

The fourth proportional to 351,875.20, 485,652.78 and 200,972.20 is: 277,378.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,875.20 : 485,652.78 = 200,972.20 : x
  2. Step 2: Convert to fraction form
    351,875.20/485,652.78 = 200,972.20/x
  3. Step 3: Cross multiply
    351,875.20x = 485,652.78 × 200,972.20
  4. Step 4: Simplify right side
    351,875.20x = 97,602,707,632.72
  5. Step 5: Solve for x
    x = 97,602,707,632.72/351,875.20
  6. Step 6: Final answer
    x = 277,378.76

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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.