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Finding the Fourth Proportional to 230,307.70, 345,428.74 and 72,532.05

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Solution

The fourth proportional to 230,307.70, 345,428.74 and 72,532.05 is: 108,787.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,307.70 : 345,428.74 = 72,532.05 : x
  2. Step 2: Convert to fraction form
    230,307.70/345,428.74 = 72,532.05/x
  3. Step 3: Cross multiply
    230,307.70x = 345,428.74 × 72,532.05
  4. Step 4: Simplify right side
    230,307.70x = 25,054,652,551.31
  5. Step 5: Solve for x
    x = 25,054,652,551.31/230,307.70
  6. Step 6: Final answer
    x = 108,787.74

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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.