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Finding the Fourth Proportional to 455,358.68, 628,392.02 and 251,422.28

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Solution

The fourth proportional to 455,358.68, 628,392.02 and 251,422.28 is: 346,961.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,358.68 : 628,392.02 = 251,422.28 : x
  2. Step 2: Convert to fraction form
    455,358.68/628,392.02 = 251,422.28/x
  3. Step 3: Cross multiply
    455,358.68x = 628,392.02 × 251,422.28
  4. Step 4: Simplify right side
    455,358.68x = 157,991,754,402.21
  5. Step 5: Solve for x
    x = 157,991,754,402.21/455,358.68
  6. Step 6: Final answer
    x = 346,961.11

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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.