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Finding the Fourth Proportional to 455,273.62, 628,312.35 and 251,363.80

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Solution

The fourth proportional to 455,273.62, 628,312.35 and 251,363.80 is: 346,901.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,273.62 : 628,312.35 = 251,363.80 : x
  2. Step 2: Convert to fraction form
    455,273.62/628,312.35 = 251,363.80/x
  3. Step 3: Cross multiply
    455,273.62x = 628,312.35 × 251,363.80
  4. Step 4: Simplify right side
    455,273.62x = 157,934,979,882.93
  5. Step 5: Solve for x
    x = 157,934,979,882.93/455,273.62
  6. Step 6: Final answer
    x = 346,901.23

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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.