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Finding the Fourth Proportional to 213,717.63, 294,930.54 and 118,230.78

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Solution

The fourth proportional to 213,717.63, 294,930.54 and 118,230.78 is: 163,158.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,717.63 : 294,930.54 = 118,230.78 : x
  2. Step 2: Convert to fraction form
    213,717.63/294,930.54 = 118,230.78/x
  3. Step 3: Cross multiply
    213,717.63x = 294,930.54 × 118,230.78
  4. Step 4: Simplify right side
    213,717.63x = 34,869,867,790.02
  5. Step 5: Solve for x
    x = 34,869,867,790.02/213,717.63
  6. Step 6: Final answer
    x = 163,158.59

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1.5x scale

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.