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Finding the Fourth Proportional to 455,282.34, 628,273.16 and 251,328.88

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Solution

The fourth proportional to 455,282.34, 628,273.16 and 251,328.88 is: 346,824.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,282.34 : 628,273.16 = 251,328.88 : x
  2. Step 2: Convert to fraction form
    455,282.34/628,273.16 = 251,328.88/x
  3. Step 3: Cross multiply
    455,282.34x = 628,273.16 × 251,328.88
  4. Step 4: Simplify right side
    455,282.34x = 157,903,189,636.86
  5. Step 5: Solve for x
    x = 157,903,189,636.86/455,282.34
  6. Step 6: Final answer
    x = 346,824.76

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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.