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Finding the Fourth Proportional to 218,750.99, 328,127.83 and 60,980.81

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Solution

The fourth proportional to 218,750.99, 328,127.83 and 60,980.81 is: 91,471.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,750.99 : 328,127.83 = 60,980.81 : x
  2. Step 2: Convert to fraction form
    218,750.99/328,127.83 = 60,980.81/x
  3. Step 3: Cross multiply
    218,750.99x = 328,127.83 × 60,980.81
  4. Step 4: Simplify right side
    218,750.99x = 20,009,499,063.85
  5. Step 5: Solve for x
    x = 20,009,499,063.85/218,750.99
  6. Step 6: Final answer
    x = 91,471.58

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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.