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Finding the Fourth Proportional to 455,978.89, 629,253.34 and 249,247.56

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Solution

The fourth proportional to 455,978.89, 629,253.34 and 249,247.56 is: 343,962.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,978.89 : 629,253.34 = 249,247.56 : x
  2. Step 2: Convert to fraction form
    455,978.89/629,253.34 = 249,247.56/x
  3. Step 3: Cross multiply
    455,978.89x = 629,253.34 × 249,247.56
  4. Step 4: Simplify right side
    455,978.89x = 156,839,859,616.85
  5. Step 5: Solve for x
    x = 156,839,859,616.85/455,978.89
  6. Step 6: Final answer
    x = 343,962.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.