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Finding the Fourth Proportional to 455,256.98, 628,289.41 and 251,347.17

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Solution

The fourth proportional to 455,256.98, 628,289.41 and 251,347.17 is: 346,878.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,256.98 : 628,289.41 = 251,347.17 : x
  2. Step 2: Convert to fraction form
    455,256.98/628,289.41 = 251,347.17/x
  3. Step 3: Cross multiply
    455,256.98x = 628,289.41 × 251,347.17
  4. Step 4: Simplify right side
    455,256.98x = 157,918,765,144.47
  5. Step 5: Solve for x
    x = 157,918,765,144.47/455,256.98
  6. Step 6: Final answer
    x = 346,878.30

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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.