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Finding the Fourth Proportional to 203,492.70, 305,152.65 and 98,343.90

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Solution

The fourth proportional to 203,492.70, 305,152.65 and 98,343.90 is: 147,474.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,492.70 : 305,152.65 = 98,343.90 : x
  2. Step 2: Convert to fraction form
    203,492.70/305,152.65 = 98,343.90/x
  3. Step 3: Cross multiply
    203,492.70x = 305,152.65 × 98,343.90
  4. Step 4: Simplify right side
    203,492.70x = 30,009,901,696.34
  5. Step 5: Solve for x
    x = 30,009,901,696.34/203,492.70
  6. Step 6: Final answer
    x = 147,474.09

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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.