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Finding the Fourth Proportional to 211,215.09, 316,893.37 and 69,066.93

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Solution

The fourth proportional to 211,215.09, 316,893.37 and 69,066.93 is: 103,623.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,215.09 : 316,893.37 = 69,066.93 : x
  2. Step 2: Convert to fraction form
    211,215.09/316,893.37 = 69,066.93/x
  3. Step 3: Cross multiply
    211,215.09x = 316,893.37 × 69,066.93
  4. Step 4: Simplify right side
    211,215.09x = 21,886,850,446.12
  5. Step 5: Solve for x
    x = 21,886,850,446.12/211,215.09
  6. Step 6: Final answer
    x = 103,623.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.