Home / 211,013.44-291,119.04-138,456.38

Finding the Fourth Proportional to 211,013.44, 291,119.04 and 138,456.38

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Solution

The fourth proportional to 211,013.44, 291,119.04 and 138,456.38 is: 191,017.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,013.44 : 291,119.04 = 138,456.38 : x
  2. Step 2: Convert to fraction form
    211,013.44/291,119.04 = 138,456.38/x
  3. Step 3: Cross multiply
    211,013.44x = 291,119.04 × 138,456.38
  4. Step 4: Simplify right side
    211,013.44x = 40,307,289,155.27
  5. Step 5: Solve for x
    x = 40,307,289,155.27/211,013.44
  6. Step 6: Final answer
    x = 191,017.64

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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.