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Finding the Fourth Proportional to 255,000.86, 351,909.71 and 140,292.71

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Solution

The fourth proportional to 255,000.86, 351,909.71 and 140,292.71 is: 193,608.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,000.86 : 351,909.71 = 140,292.71 : x
  2. Step 2: Convert to fraction form
    255,000.86/351,909.71 = 140,292.71/x
  3. Step 3: Cross multiply
    255,000.86x = 351,909.71 × 140,292.71
  4. Step 4: Simplify right side
    255,000.86x = 49,370,367,065.11
  5. Step 5: Solve for x
    x = 49,370,367,065.11/255,000.86
  6. Step 6: Final answer
    x = 193,608.63

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1.5x scale

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.