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Finding the Fourth Proportional to 455,345.37, 628,364.10 and 251,392.58

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Solution

The fourth proportional to 455,345.37, 628,364.10 and 251,392.58 is: 346,914.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,345.37 : 628,364.10 = 251,392.58 : x
  2. Step 2: Convert to fraction form
    455,345.37/628,364.10 = 251,392.58/x
  3. Step 3: Cross multiply
    455,345.37x = 628,364.10 × 251,392.58
  4. Step 4: Simplify right side
    455,345.37x = 157,966,069,136.56
  5. Step 5: Solve for x
    x = 157,966,069,136.56/455,345.37
  6. Step 6: Final answer
    x = 346,914.85

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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.