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Finding the Fourth Proportional to 425,362.40, 638,107.01 and 151,787.30

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Solution

The fourth proportional to 425,362.40, 638,107.01 and 151,787.30 is: 227,703.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,362.40 : 638,107.01 = 151,787.30 : x
  2. Step 2: Convert to fraction form
    425,362.40/638,107.01 = 151,787.30/x
  3. Step 3: Cross multiply
    425,362.40x = 638,107.01 × 151,787.30
  4. Step 4: Simplify right side
    425,362.40x = 96,856,536,209.50
  5. Step 5: Solve for x
    x = 96,856,536,209.50/425,362.40
  6. Step 6: Final answer
    x = 227,703.57

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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.