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Finding the Fourth Proportional to 455,302.77, 628,301.32 and 251,349.30

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Solution

The fourth proportional to 455,302.77, 628,301.32 and 251,349.30 is: 346,852.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,302.77 : 628,301.32 = 251,349.30 : x
  2. Step 2: Convert to fraction form
    455,302.77/628,301.32 = 251,349.30/x
  3. Step 3: Cross multiply
    455,302.77x = 628,301.32 × 251,349.30
  4. Step 4: Simplify right side
    455,302.77x = 157,923,096,342.70
  5. Step 5: Solve for x
    x = 157,923,096,342.70/455,302.77
  6. Step 6: Final answer
    x = 346,852.93

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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.