Home / 211,399.23-291,728.72-115,905.69

Finding the Fourth Proportional to 211,399.23, 291,728.72 and 115,905.69

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Solution

The fourth proportional to 211,399.23, 291,728.72 and 115,905.69 is: 159,948.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,399.23 : 291,728.72 = 115,905.69 : x
  2. Step 2: Convert to fraction form
    211,399.23/291,728.72 = 115,905.69/x
  3. Step 3: Cross multiply
    211,399.23x = 291,728.72 × 115,905.69
  4. Step 4: Simplify right side
    211,399.23x = 33,813,018,004.89
  5. Step 5: Solve for x
    x = 33,813,018,004.89/211,399.23
  6. Step 6: Final answer
    x = 159,948.63

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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.