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Finding the Fourth Proportional to 400,429.98, 600,652.50 and 187,139.37

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Solution

The fourth proportional to 400,429.98, 600,652.50 and 187,139.37 is: 280,712.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,429.98 : 600,652.50 = 187,139.37 : x
  2. Step 2: Convert to fraction form
    400,429.98/600,652.50 = 187,139.37/x
  3. Step 3: Cross multiply
    400,429.98x = 600,652.50 × 187,139.37
  4. Step 4: Simplify right side
    400,429.98x = 112,405,730,438.93
  5. Step 5: Solve for x
    x = 112,405,730,438.93/400,429.98
  6. Step 6: Final answer
    x = 280,712.57

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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.