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Finding the Fourth Proportional to 455,299.89, 628,316.22 and 251,347.08

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Solution

The fourth proportional to 455,299.89, 628,316.22 and 251,347.08 is: 346,860.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,299.89 : 628,316.22 = 251,347.08 : x
  2. Step 2: Convert to fraction form
    455,299.89/628,316.22 = 251,347.08/x
  3. Step 3: Cross multiply
    455,299.89x = 628,316.22 × 251,347.08
  4. Step 4: Simplify right side
    455,299.89x = 157,925,447,213.64
  5. Step 5: Solve for x
    x = 157,925,447,213.64/455,299.89
  6. Step 6: Final answer
    x = 346,860.28

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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.