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Finding the Fourth Proportional to 402,987.37, 603,982.83 and 203,364.87

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Solution

The fourth proportional to 402,987.37, 603,982.83 and 203,364.87 is: 304,795.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,987.37 : 603,982.83 = 203,364.87 : x
  2. Step 2: Convert to fraction form
    402,987.37/603,982.83 = 203,364.87/x
  3. Step 3: Cross multiply
    402,987.37x = 603,982.83 × 203,364.87
  4. Step 4: Simplify right side
    402,987.37x = 122,828,889,705.18
  5. Step 5: Solve for x
    x = 122,828,889,705.18/402,987.37
  6. Step 6: Final answer
    x = 304,795.88

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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.