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Finding the Fourth Proportional to 284,717.11, 392,890.89 and 163,838.89

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Solution

The fourth proportional to 284,717.11, 392,890.89 and 163,838.89 is: 226,086.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,717.11 : 392,890.89 = 163,838.89 : x
  2. Step 2: Convert to fraction form
    284,717.11/392,890.89 = 163,838.89/x
  3. Step 3: Cross multiply
    284,717.11x = 392,890.89 × 163,838.89
  4. Step 4: Simplify right side
    284,717.11x = 64,370,807,308.71
  5. Step 5: Solve for x
    x = 64,370,807,308.71/284,717.11
  6. Step 6: Final answer
    x = 226,086.89

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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.