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Finding the Fourth Proportional to 292,122.45, 438,194.61 and 81,754.92

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Solution

The fourth proportional to 292,122.45, 438,194.61 and 81,754.92 is: 122,635.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,122.45 : 438,194.61 = 81,754.92 : x
  2. Step 2: Convert to fraction form
    292,122.45/438,194.61 = 81,754.92/x
  3. Step 3: Cross multiply
    292,122.45x = 438,194.61 × 81,754.92
  4. Step 4: Simplify right side
    292,122.45x = 35,824,565,284.98
  5. Step 5: Solve for x
    x = 35,824,565,284.98/292,122.45
  6. Step 6: Final answer
    x = 122,635.44

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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.