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Finding the Fourth Proportional to 455,273.50, 628,312.18 and 251,363.68

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Solution

The fourth proportional to 455,273.50, 628,312.18 and 251,363.68 is: 346,901.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,273.50 : 628,312.18 = 251,363.68 : x
  2. Step 2: Convert to fraction form
    455,273.50/628,312.18 = 251,363.68/x
  3. Step 3: Cross multiply
    455,273.50x = 628,312.18 × 251,363.68
  4. Step 4: Simplify right side
    455,273.50x = 157,934,857,983.65
  5. Step 5: Solve for x
    x = 157,934,857,983.65/455,273.50
  6. Step 6: Final answer
    x = 346,901.06

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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.