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Finding the Fourth Proportional to 203,492.60, 305,238.90 and 103,959.80

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Solution

The fourth proportional to 203,492.60, 305,238.90 and 103,959.80 is: 155,939.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,492.60 : 305,238.90 = 103,959.80 : x
  2. Step 2: Convert to fraction form
    203,492.60/305,238.90 = 103,959.80/x
  3. Step 3: Cross multiply
    203,492.60x = 305,238.90 × 103,959.80
  4. Step 4: Simplify right side
    203,492.60x = 31,732,574,996.22
  5. Step 5: Solve for x
    x = 31,732,574,996.22/203,492.60
  6. Step 6: Final answer
    x = 155,939.70

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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.