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Finding the Fourth Proportional to 455,624.96, 628,759.94 and 251,689.91

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Solution

The fourth proportional to 455,624.96, 628,759.94 and 251,689.91 is: 347,330.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,624.96 : 628,759.94 = 251,689.91 : x
  2. Step 2: Convert to fraction form
    455,624.96/628,759.94 = 251,689.91/x
  3. Step 3: Cross multiply
    455,624.96x = 628,759.94 × 251,689.91
  4. Step 4: Simplify right side
    455,624.96x = 158,252,528,307.96
  5. Step 5: Solve for x
    x = 158,252,528,307.96/455,624.96
  6. Step 6: Final answer
    x = 347,330.69

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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.