Home / 211,419-291,767.04-115,929.36

Finding the Fourth Proportional to 211,419, 291,767.04 and 115,929.36

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Solution

The fourth proportional to 211,419, 291,767.04 and 115,929.36 is: 159,987.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,419 : 291,767.04 = 115,929.36 : x
  2. Step 2: Convert to fraction form
    211,419/291,767.04 = 115,929.36/x
  3. Step 3: Cross multiply
    211,419x = 291,767.04 × 115,929.36
  4. Step 4: Simplify right side
    211,419x = 33,824,366,216.29
  5. Step 5: Solve for x
    x = 33,824,366,216.29/211,419
  6. Step 6: Final answer
    x = 159,987.35

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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.