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Finding the Fourth Proportional to 211,167, 291,406.86 and 115,673.40

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Solution

The fourth proportional to 211,167, 291,406.86 and 115,673.40 is: 159,627.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,167 : 291,406.86 = 115,673.40 : x
  2. Step 2: Convert to fraction form
    211,167/291,406.86 = 115,673.40/x
  3. Step 3: Cross multiply
    211,167x = 291,406.86 × 115,673.40
  4. Step 4: Simplify right side
    211,167x = 33,708,022,279.52
  5. Step 5: Solve for x
    x = 33,708,022,279.52/211,167
  6. Step 6: Final answer
    x = 159,627.32

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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.