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Finding the Fourth Proportional to 255,390.90, 352,270.56 and 159,731.52

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Solution

The fourth proportional to 255,390.90, 352,270.56 and 159,731.52 is: 220,323.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,390.90 : 352,270.56 = 159,731.52 : x
  2. Step 2: Convert to fraction form
    255,390.90/352,270.56 = 159,731.52/x
  3. Step 3: Cross multiply
    255,390.90x = 352,270.56 × 159,731.52
  4. Step 4: Simplify right side
    255,390.90x = 56,268,712,000.05
  5. Step 5: Solve for x
    x = 56,268,712,000.05/255,390.90
  6. Step 6: Final answer
    x = 220,323.87

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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.