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Finding the Fourth Proportional to 255,456.79, 352,503.90 and 157,324.50

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Solution

The fourth proportional to 255,456.79, 352,503.90 and 157,324.50 is: 217,091.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,456.79 : 352,503.90 = 157,324.50 : x
  2. Step 2: Convert to fraction form
    255,456.79/352,503.90 = 157,324.50/x
  3. Step 3: Cross multiply
    255,456.79x = 352,503.90 × 157,324.50
  4. Step 4: Simplify right side
    255,456.79x = 55,457,499,815.55
  5. Step 5: Solve for x
    x = 55,457,499,815.55/255,456.79
  6. Step 6: Final answer
    x = 217,091.51

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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.