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Finding the Fourth Proportional to 455,280.98, 628,271.28 and 251,327.52

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Solution

The fourth proportional to 455,280.98, 628,271.28 and 251,327.52 is: 346,822.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,280.98 : 628,271.28 = 251,327.52 : x
  2. Step 2: Convert to fraction form
    455,280.98/628,271.28 = 251,327.52/x
  3. Step 3: Cross multiply
    455,280.98x = 628,271.28 × 251,327.52
  4. Step 4: Simplify right side
    455,280.98x = 157,901,859,391.13
  5. Step 5: Solve for x
    x = 157,901,859,391.13/455,280.98
  6. Step 6: Final answer
    x = 346,822.88

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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.