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Finding the Fourth Proportional to 211,124.40, 316,606.40 and 68,935.92

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Solution

The fourth proportional to 211,124.40, 316,606.40 and 68,935.92 is: 103,377.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,124.40 : 316,606.40 = 68,935.92 : x
  2. Step 2: Convert to fraction form
    211,124.40/316,606.40 = 68,935.92/x
  3. Step 3: Cross multiply
    211,124.40x = 316,606.40 × 68,935.92
  4. Step 4: Simplify right side
    211,124.40x = 21,825,553,461.89
  5. Step 5: Solve for x
    x = 21,825,553,461.89/211,124.40
  6. Step 6: Final answer
    x = 103,377.69

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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.