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Finding the Fourth Proportional to 211,002.72, 316,159.02 and 203,129.52

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Solution

The fourth proportional to 211,002.72, 316,159.02 and 203,129.52 is: 304,362.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,002.72 : 316,159.02 = 203,129.52 : x
  2. Step 2: Convert to fraction form
    211,002.72/316,159.02 = 203,129.52/x
  3. Step 3: Cross multiply
    211,002.72x = 316,159.02 × 203,129.52
  4. Step 4: Simplify right side
    211,002.72x = 64,221,229,976.27
  5. Step 5: Solve for x
    x = 64,221,229,976.27/211,002.72
  6. Step 6: Final answer
    x = 304,362.10

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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.