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Finding the Fourth Proportional to 399,143.88, 598,267.44 and 262,631.34

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Solution

The fourth proportional to 399,143.88, 598,267.44 and 262,631.34 is: 393,651.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,143.88 : 598,267.44 = 262,631.34 : x
  2. Step 2: Convert to fraction form
    399,143.88/598,267.44 = 262,631.34/x
  3. Step 3: Cross multiply
    399,143.88x = 598,267.44 × 262,631.34
  4. Step 4: Simplify right side
    399,143.88x = 157,123,779,445.57
  5. Step 5: Solve for x
    x = 157,123,779,445.57/399,143.88
  6. Step 6: Final answer
    x = 393,651.98

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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.