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Finding the Fourth Proportional to 455,289.76, 628,300.80 and 251,340.96

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Solution

The fourth proportional to 455,289.76, 628,300.80 and 251,340.96 is: 346,851.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,289.76 : 628,300.80 = 251,340.96 : x
  2. Step 2: Convert to fraction form
    455,289.76/628,300.80 = 251,340.96/x
  3. Step 3: Cross multiply
    455,289.76x = 628,300.80 × 251,340.96
  4. Step 4: Simplify right side
    455,289.76x = 157,917,726,240.77
  5. Step 5: Solve for x
    x = 157,917,726,240.77/455,289.76
  6. Step 6: Final answer
    x = 346,851.04

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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.