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Finding the Fourth Proportional to 250,438.40, 376,003.20 and 197,907.20

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Solution

The fourth proportional to 250,438.40, 376,003.20 and 197,907.20 is: 297,133.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,438.40 : 376,003.20 = 197,907.20 : x
  2. Step 2: Convert to fraction form
    250,438.40/376,003.20 = 197,907.20/x
  3. Step 3: Cross multiply
    250,438.40x = 376,003.20 × 197,907.20
  4. Step 4: Simplify right side
    250,438.40x = 74,413,740,503.04
  5. Step 5: Solve for x
    x = 74,413,740,503.04/250,438.40
  6. Step 6: Final answer
    x = 297,133.91

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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.