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Finding the Fourth Proportional to 455,281.34, 628,271.78 and 251,327.88

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Solution

The fourth proportional to 455,281.34, 628,271.78 and 251,327.88 is: 346,823.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,281.34 : 628,271.78 = 251,327.88 : x
  2. Step 2: Convert to fraction form
    455,281.34/628,271.78 = 251,327.88/x
  3. Step 3: Cross multiply
    455,281.34x = 628,271.78 × 251,327.88
  4. Step 4: Simplify right side
    455,281.34x = 157,902,214,531.23
  5. Step 5: Solve for x
    x = 157,902,214,531.23/455,281.34
  6. Step 6: Final answer
    x = 346,823.38

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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.