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Finding the Fourth Proportional to 455,285.76, 628,295.28 and 251,336.95

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Solution

The fourth proportional to 455,285.76, 628,295.28 and 251,336.95 is: 346,845.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,285.76 : 628,295.28 = 251,336.95 : x
  2. Step 2: Convert to fraction form
    455,285.76/628,295.28 = 251,336.95/x
  3. Step 3: Cross multiply
    455,285.76x = 628,295.28 × 251,336.95
  4. Step 4: Simplify right side
    455,285.76x = 157,913,820,042.20
  5. Step 5: Solve for x
    x = 157,913,820,042.20/455,285.76
  6. Step 6: Final answer
    x = 346,845.51

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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.