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Finding the Fourth Proportional to 254,605.60, 381,811.20 and 77,053.60

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Solution

The fourth proportional to 254,605.60, 381,811.20 and 77,053.60 is: 115,550.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,605.60 : 381,811.20 = 77,053.60 : x
  2. Step 2: Convert to fraction form
    254,605.60/381,811.20 = 77,053.60/x
  3. Step 3: Cross multiply
    254,605.60x = 381,811.20 × 77,053.60
  4. Step 4: Simplify right side
    254,605.60x = 29,419,927,480.32
  5. Step 5: Solve for x
    x = 29,419,927,480.32/254,605.60
  6. Step 6: Final answer
    x = 115,550.98

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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.