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Finding the Fourth Proportional to 255,390.80, 352,441.71 and 140,669.87

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Solution

The fourth proportional to 255,390.80, 352,441.71 and 140,669.87 is: 194,125.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,390.80 : 352,441.71 = 140,669.87 : x
  2. Step 2: Convert to fraction form
    255,390.80/352,441.71 = 140,669.87/x
  3. Step 3: Cross multiply
    255,390.80x = 352,441.71 × 140,669.87
  4. Step 4: Simplify right side
    255,390.80x = 49,577,927,766.07
  5. Step 5: Solve for x
    x = 49,577,927,766.07/255,390.80
  6. Step 6: Final answer
    x = 194,125.74

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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.