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Finding the Fourth Proportional to 255,730.68, 352,839.11 and 145,347.80

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Solution

The fourth proportional to 255,730.68, 352,839.11 and 145,347.80 is: 200,540.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,730.68 : 352,839.11 = 145,347.80 : x
  2. Step 2: Convert to fraction form
    255,730.68/352,839.11 = 145,347.80/x
  3. Step 3: Cross multiply
    255,730.68x = 352,839.11 × 145,347.80
  4. Step 4: Simplify right side
    255,730.68x = 51,284,385,901.52
  5. Step 5: Solve for x
    x = 51,284,385,901.52/255,730.68
  6. Step 6: Final answer
    x = 200,540.61

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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.