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Finding the Fourth Proportional to 187,238.90, 280,858.35 and 163,910.90

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Solution

The fourth proportional to 187,238.90, 280,858.35 and 163,910.90 is: 245,866.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,238.90 : 280,858.35 = 163,910.90 : x
  2. Step 2: Convert to fraction form
    187,238.90/280,858.35 = 163,910.90/x
  3. Step 3: Cross multiply
    187,238.90x = 280,858.35 × 163,910.90
  4. Step 4: Simplify right side
    187,238.90x = 46,035,744,921.02
  5. Step 5: Solve for x
    x = 46,035,744,921.02/187,238.90
  6. Step 6: Final answer
    x = 245,866.35

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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.