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Finding the Fourth Proportional to 449,796.96, 673,130.52 and 278,938.80

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Solution

The fourth proportional to 449,796.96, 673,130.52 and 278,938.80 is: 417,437.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,796.96 : 673,130.52 = 278,938.80 : x
  2. Step 2: Convert to fraction form
    449,796.96/673,130.52 = 278,938.80/x
  3. Step 3: Cross multiply
    449,796.96x = 673,130.52 × 278,938.80
  4. Step 4: Simplify right side
    449,796.96x = 187,762,219,492.18
  5. Step 5: Solve for x
    x = 187,762,219,492.18/449,796.96
  6. Step 6: Final answer
    x = 417,437.72

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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.