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Finding the Fourth Proportional to 455,296.71, 628,314.54 and 251,347.74

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Solution

The fourth proportional to 455,296.71, 628,314.54 and 251,347.74 is: 346,862.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,296.71 : 628,314.54 = 251,347.74 : x
  2. Step 2: Convert to fraction form
    455,296.71/628,314.54 = 251,347.74/x
  3. Step 3: Cross multiply
    455,296.71x = 628,314.54 × 251,347.74
  4. Step 4: Simplify right side
    455,296.71x = 157,925,439,638.14
  5. Step 5: Solve for x
    x = 157,925,439,638.14/455,296.71
  6. Step 6: Final answer
    x = 346,862.69

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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.