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Finding the Fourth Proportional to 455,288.76, 628,308.52 and 251,339.20

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Solution

The fourth proportional to 455,288.76, 628,308.52 and 251,339.20 is: 346,853.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,288.76 : 628,308.52 = 251,339.20 : x
  2. Step 2: Convert to fraction form
    455,288.76/628,308.52 = 251,339.20/x
  3. Step 3: Cross multiply
    455,288.76x = 628,308.52 × 251,339.20
  4. Step 4: Simplify right side
    455,288.76x = 157,918,560,769.98
  5. Step 5: Solve for x
    x = 157,918,560,769.98/455,288.76
  6. Step 6: Final answer
    x = 346,853.63

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1.5x scale

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.