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Finding the Fourth Proportional to 255,284.55, 352,289.70 and 140,560.80

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Solution

The fourth proportional to 255,284.55, 352,289.70 and 140,560.80 is: 193,972.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,284.55 : 352,289.70 = 140,560.80 : x
  2. Step 2: Convert to fraction form
    255,284.55/352,289.70 = 140,560.80/x
  3. Step 3: Cross multiply
    255,284.55x = 352,289.70 × 140,560.80
  4. Step 4: Simplify right side
    255,284.55x = 49,518,122,063.76
  5. Step 5: Solve for x
    x = 49,518,122,063.76/255,284.55
  6. Step 6: Final answer
    x = 193,972.26

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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.