Home / 211,418.64-291,763.62-115,931.79

Finding the Fourth Proportional to 211,418.64, 291,763.62 and 115,931.79

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Solution

The fourth proportional to 211,418.64, 291,763.62 and 115,931.79 is: 159,989.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,418.64 : 291,763.62 = 115,931.79 : x
  2. Step 2: Convert to fraction form
    211,418.64/291,763.62 = 115,931.79/x
  3. Step 3: Cross multiply
    211,418.64x = 291,763.62 × 115,931.79
  4. Step 4: Simplify right side
    211,418.64x = 33,824,678,723.48
  5. Step 5: Solve for x
    x = 33,824,678,723.48/211,418.64
  6. Step 6: Final answer
    x = 159,989.10

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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.