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Finding the Fourth Proportional to 278,435.63, 417,660.65 and 88,895.84

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Solution

The fourth proportional to 278,435.63, 417,660.65 and 88,895.84 is: 133,346.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,435.63 : 417,660.65 = 88,895.84 : x
  2. Step 2: Convert to fraction form
    278,435.63/417,660.65 = 88,895.84/x
  3. Step 3: Cross multiply
    278,435.63x = 417,660.65 × 88,895.84
  4. Step 4: Simplify right side
    278,435.63x = 37,128,292,117.27
  5. Step 5: Solve for x
    x = 37,128,292,117.27/278,435.63
  6. Step 6: Final answer
    x = 133,346.05

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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.