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Finding the Fourth Proportional to 253,953.60, 380,961.88 and 83,116.63

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Solution

The fourth proportional to 253,953.60, 380,961.88 and 83,116.63 is: 124,685.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,953.60 : 380,961.88 = 83,116.63 : x
  2. Step 2: Convert to fraction form
    253,953.60/380,961.88 = 83,116.63/x
  3. Step 3: Cross multiply
    253,953.60x = 380,961.88 × 83,116.63
  4. Step 4: Simplify right side
    253,953.60x = 31,664,268,360.01
  5. Step 5: Solve for x
    x = 31,664,268,360.01/253,953.60
  6. Step 6: Final answer
    x = 124,685.25

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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.