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Finding the Fourth Proportional to 211,218.66, 316,832.04 and 69,064.47

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Solution

The fourth proportional to 211,218.66, 316,832.04 and 69,064.47 is: 103,598.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,218.66 : 316,832.04 = 69,064.47 : x
  2. Step 2: Convert to fraction form
    211,218.66/316,832.04 = 69,064.47/x
  3. Step 3: Cross multiply
    211,218.66x = 316,832.04 × 69,064.47
  4. Step 4: Simplify right side
    211,218.66x = 21,881,836,921.62
  5. Step 5: Solve for x
    x = 21,881,836,921.62/211,218.66
  6. Step 6: Final answer
    x = 103,598.03

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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.