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Finding the Fourth Proportional to 368,677.89, 508,503.86 and 278,037.68

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Solution

The fourth proportional to 368,677.89, 508,503.86 and 278,037.68 is: 383,487.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,677.89 : 508,503.86 = 278,037.68 : x
  2. Step 2: Convert to fraction form
    368,677.89/508,503.86 = 278,037.68/x
  3. Step 3: Cross multiply
    368,677.89x = 508,503.86 × 278,037.68
  4. Step 4: Simplify right side
    368,677.89x = 141,383,233,505.45
  5. Step 5: Solve for x
    x = 141,383,233,505.45/368,677.89
  6. Step 6: Final answer
    x = 383,487.15

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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.