Home / 389,921.06-538,091.16-211,073.06

Finding the Fourth Proportional to 389,921.06, 538,091.16 and 211,073.06

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Solution

The fourth proportional to 389,921.06, 538,091.16 and 211,073.06 is: 291,280.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,921.06 : 538,091.16 = 211,073.06 : x
  2. Step 2: Convert to fraction form
    389,921.06/538,091.16 = 211,073.06/x
  3. Step 3: Cross multiply
    389,921.06x = 538,091.16 × 211,073.06
  4. Step 4: Simplify right side
    389,921.06x = 113,576,547,700.15
  5. Step 5: Solve for x
    x = 113,576,547,700.15/389,921.06
  6. Step 6: Final answer
    x = 291,280.88

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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.