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Finding the Fourth Proportional to 455,675.80, 628,830.57 and 251,726.81

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Solution

The fourth proportional to 455,675.80, 628,830.57 and 251,726.81 is: 347,381.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,675.80 : 628,830.57 = 251,726.81 : x
  2. Step 2: Convert to fraction form
    455,675.80/628,830.57 = 251,726.81/x
  3. Step 3: Cross multiply
    455,675.80x = 628,830.57 × 251,726.81
  4. Step 4: Simplify right side
    455,675.80x = 158,293,513,416.58
  5. Step 5: Solve for x
    x = 158,293,513,416.58/455,675.80
  6. Step 6: Final answer
    x = 347,381.88

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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.