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Finding the Fourth Proportional to 255,066.88, 351,990.64 and 140,352.52

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Solution

The fourth proportional to 255,066.88, 351,990.64 and 140,352.52 is: 193,685.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,066.88 : 351,990.64 = 140,352.52 : x
  2. Step 2: Convert to fraction form
    255,066.88/351,990.64 = 140,352.52/x
  3. Step 3: Cross multiply
    255,066.88x = 351,990.64 × 140,352.52
  4. Step 4: Simplify right side
    255,066.88x = 49,402,773,340.41
  5. Step 5: Solve for x
    x = 49,402,773,340.41/255,066.88
  6. Step 6: Final answer
    x = 193,685.57

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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.