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Finding the Fourth Proportional to 508,087.64, 701,161.94 and 278,646.55

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Solution

The fourth proportional to 508,087.64, 701,161.94 and 278,646.55 is: 384,532.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,087.64 : 701,161.94 = 278,646.55 : x
  2. Step 2: Convert to fraction form
    508,087.64/701,161.94 = 278,646.55/x
  3. Step 3: Cross multiply
    508,087.64x = 701,161.94 × 278,646.55
  4. Step 4: Simplify right side
    508,087.64x = 195,376,354,516.02
  5. Step 5: Solve for x
    x = 195,376,354,516.02/508,087.64
  6. Step 6: Final answer
    x = 384,532.78

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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.