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Finding the Fourth Proportional to 475,860.60, 656,711.69 and 261,020.66

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Solution

The fourth proportional to 475,860.60, 656,711.69 and 261,020.66 is: 360,221.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,860.60 : 656,711.69 = 261,020.66 : x
  2. Step 2: Convert to fraction form
    475,860.60/656,711.69 = 261,020.66/x
  3. Step 3: Cross multiply
    475,860.60x = 656,711.69 × 261,020.66
  4. Step 4: Simplify right side
    475,860.60x = 171,415,314,164.85
  5. Step 5: Solve for x
    x = 171,415,314,164.85/475,860.60
  6. Step 6: Final answer
    x = 360,221.70

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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.