Home / 278,511.64-384,238.41-157,625.21

Finding the Fourth Proportional to 278,511.64, 384,238.41 and 157,625.21

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Solution

The fourth proportional to 278,511.64, 384,238.41 and 157,625.21 is: 217,461.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,511.64 : 384,238.41 = 157,625.21 : x
  2. Step 2: Convert to fraction form
    278,511.64/384,238.41 = 157,625.21/x
  3. Step 3: Cross multiply
    278,511.64x = 384,238.41 × 157,625.21
  4. Step 4: Simplify right side
    278,511.64x = 60,565,660,066.32
  5. Step 5: Solve for x
    x = 60,565,660,066.32/278,511.64
  6. Step 6: Final answer
    x = 217,461.86

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1.5x scale

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.