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Finding the Fourth Proportional to 255,015.54, 351,916.54 and 140,287.48

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Solution

The fourth proportional to 255,015.54, 351,916.54 and 140,287.48 is: 193,594.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,015.54 : 351,916.54 = 140,287.48 : x
  2. Step 2: Convert to fraction form
    255,015.54/351,916.54 = 140,287.48/x
  3. Step 3: Cross multiply
    255,015.54x = 351,916.54 × 140,287.48
  4. Step 4: Simplify right side
    255,015.54x = 49,369,484,566.92
  5. Step 5: Solve for x
    x = 49,369,484,566.92/255,015.54
  6. Step 6: Final answer
    x = 193,594.02

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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.