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Finding the Fourth Proportional to 455,225.73, 628,211.54 and 251,276.71

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Solution

The fourth proportional to 455,225.73, 628,211.54 and 251,276.71 is: 346,761.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,225.73 : 628,211.54 = 251,276.71 : x
  2. Step 2: Convert to fraction form
    455,225.73/628,211.54 = 251,276.71/x
  3. Step 3: Cross multiply
    455,225.73x = 628,211.54 × 251,276.71
  4. Step 4: Simplify right side
    455,225.73x = 157,854,924,557.79
  5. Step 5: Solve for x
    x = 157,854,924,557.79/455,225.73
  6. Step 6: Final answer
    x = 346,761.87

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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.