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Finding the Fourth Proportional to 531,110.45, 796,901.21 and 278,330.87

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Solution

The fourth proportional to 531,110.45, 796,901.21 and 278,330.87 is: 417,619.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,110.45 : 796,901.21 = 278,330.87 : x
  2. Step 2: Convert to fraction form
    531,110.45/796,901.21 = 278,330.87/x
  3. Step 3: Cross multiply
    531,110.45x = 796,901.21 × 278,330.87
  4. Step 4: Simplify right side
    531,110.45x = 221,802,201,707.19
  5. Step 5: Solve for x
    x = 221,802,201,707.19/531,110.45
  6. Step 6: Final answer
    x = 417,619.73

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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.