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Finding the Fourth Proportional to 469,420.98, 647,801.28 and 254,560.98

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Solution

The fourth proportional to 469,420.98, 647,801.28 and 254,560.98 is: 351,294.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,420.98 : 647,801.28 = 254,560.98 : x
  2. Step 2: Convert to fraction form
    469,420.98/647,801.28 = 254,560.98/x
  3. Step 3: Cross multiply
    469,420.98x = 647,801.28 × 254,560.98
  4. Step 4: Simplify right side
    469,420.98x = 164,904,928,682.05
  5. Step 5: Solve for x
    x = 164,904,928,682.05/469,420.98
  6. Step 6: Final answer
    x = 351,294.33

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1.5x scale

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.