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Finding the Fourth Proportional to 278,233.92, 417,467.52 and 91,264.32

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Solution

The fourth proportional to 278,233.92, 417,467.52 and 91,264.32 is: 136,934.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,233.92 : 417,467.52 = 91,264.32 : x
  2. Step 2: Convert to fraction form
    278,233.92/417,467.52 = 91,264.32/x
  3. Step 3: Cross multiply
    278,233.92x = 417,467.52 × 91,264.32
  4. Step 4: Simplify right side
    278,233.92x = 38,099,889,334.89
  5. Step 5: Solve for x
    x = 38,099,889,334.89/278,233.92
  6. Step 6: Final answer
    x = 136,934.74

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1.5x scale

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.