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Finding the Fourth Proportional to 455,675.79, 628,830.57 and 251,726.80

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Solution

The fourth proportional to 455,675.79, 628,830.57 and 251,726.80 is: 347,381.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,675.79 : 628,830.57 = 251,726.80 : x
  2. Step 2: Convert to fraction form
    455,675.79/628,830.57 = 251,726.80/x
  3. Step 3: Cross multiply
    455,675.79x = 628,830.57 × 251,726.80
  4. Step 4: Simplify right side
    455,675.79x = 158,293,507,128.28
  5. Step 5: Solve for x
    x = 158,293,507,128.28/455,675.79
  6. Step 6: Final answer
    x = 347,381.87

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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.