Home / 211,275.66-291,562.71-115,780.32

Finding the Fourth Proportional to 211,275.66, 291,562.71 and 115,780.32

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Solution

The fourth proportional to 211,275.66, 291,562.71 and 115,780.32 is: 159,778.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,275.66 : 291,562.71 = 115,780.32 : x
  2. Step 2: Convert to fraction form
    211,275.66/291,562.71 = 115,780.32/x
  3. Step 3: Cross multiply
    211,275.66x = 291,562.71 × 115,780.32
  4. Step 4: Simplify right side
    211,275.66x = 33,757,223,863.87
  5. Step 5: Solve for x
    x = 33,757,223,863.87/211,275.66
  6. Step 6: Final answer
    x = 159,778.10

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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.