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Finding the Fourth Proportional to 455,242.17, 628,234.32 and 251,293.22

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Solution

The fourth proportional to 455,242.17, 628,234.32 and 251,293.22 is: 346,784.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,242.17 : 628,234.32 = 251,293.22 : x
  2. Step 2: Convert to fraction form
    455,242.17/628,234.32 = 251,293.22/x
  3. Step 3: Cross multiply
    455,242.17x = 628,234.32 × 251,293.22
  4. Step 4: Simplify right side
    455,242.17x = 157,871,020,789.67
  5. Step 5: Solve for x
    x = 157,871,020,789.67/455,242.17
  6. Step 6: Final answer
    x = 346,784.70

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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.