Home / 309,552.54-427,273.21-202,139.25

Finding the Fourth Proportional to 309,552.54, 427,273.21 and 202,139.25

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Solution

The fourth proportional to 309,552.54, 427,273.21 and 202,139.25 is: 279,011.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,552.54 : 427,273.21 = 202,139.25 : x
  2. Step 2: Convert to fraction form
    309,552.54/427,273.21 = 202,139.25/x
  3. Step 3: Cross multiply
    309,552.54x = 427,273.21 × 202,139.25
  4. Step 4: Simplify right side
    309,552.54x = 86,368,686,214.49
  5. Step 5: Solve for x
    x = 86,368,686,214.49/309,552.54
  6. Step 6: Final answer
    x = 279,011.40

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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.