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Finding the Fourth Proportional to 203,685.60, 305,119.44 and 103,841.76

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Solution

The fourth proportional to 203,685.60, 305,119.44 and 103,841.76 is: 155,554.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,685.60 : 305,119.44 = 103,841.76 : x
  2. Step 2: Convert to fraction form
    203,685.60/305,119.44 = 103,841.76/x
  3. Step 3: Cross multiply
    203,685.60x = 305,119.44 × 103,841.76
  4. Step 4: Simplify right side
    203,685.60x = 31,684,139,659.81
  5. Step 5: Solve for x
    x = 31,684,139,659.81/203,685.60
  6. Step 6: Final answer
    x = 155,554.15

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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.