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Finding the Fourth Proportional to 211,290.30, 291,578.94 and 115,796.77

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Solution

The fourth proportional to 211,290.30, 291,578.94 and 115,796.77 is: 159,798.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,290.30 : 291,578.94 = 115,796.77 : x
  2. Step 2: Convert to fraction form
    211,290.30/291,578.94 = 115,796.77/x
  3. Step 3: Cross multiply
    211,290.30x = 291,578.94 × 115,796.77
  4. Step 4: Simplify right side
    211,290.30x = 33,763,898,723.08
  5. Step 5: Solve for x
    x = 33,763,898,723.08/211,290.30
  6. Step 6: Final answer
    x = 159,798.62

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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.