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Finding the Fourth Proportional to 356,272.80, 533,955.60 and 145,672.80

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Solution

The fourth proportional to 356,272.80, 533,955.60 and 145,672.80 is: 218,323.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,272.80 : 533,955.60 = 145,672.80 : x
  2. Step 2: Convert to fraction form
    356,272.80/533,955.60 = 145,672.80/x
  3. Step 3: Cross multiply
    356,272.80x = 533,955.60 × 145,672.80
  4. Step 4: Simplify right side
    356,272.80x = 77,782,807,327.68
  5. Step 5: Solve for x
    x = 77,782,807,327.68/356,272.80
  6. Step 6: Final answer
    x = 218,323.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.