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Finding the Fourth Proportional to 455,454.90, 628,511.67 and 251,502.30

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Solution

The fourth proportional to 455,454.90, 628,511.67 and 251,502.30 is: 347,064.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,454.90 : 628,511.67 = 251,502.30 : x
  2. Step 2: Convert to fraction form
    455,454.90/628,511.67 = 251,502.30/x
  3. Step 3: Cross multiply
    455,454.90x = 628,511.67 × 251,502.30
  4. Step 4: Simplify right side
    455,454.90x = 158,072,130,581.84
  5. Step 5: Solve for x
    x = 158,072,130,581.84/455,454.90
  6. Step 6: Final answer
    x = 347,064.29

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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.