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Finding the Fourth Proportional to 455,870.79, 629,100.14 and 251,916.03

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Solution

The fourth proportional to 455,870.79, 629,100.14 and 251,916.03 is: 347,643.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,870.79 : 629,100.14 = 251,916.03 : x
  2. Step 2: Convert to fraction form
    455,870.79/629,100.14 = 251,916.03/x
  3. Step 3: Cross multiply
    455,870.79x = 629,100.14 × 251,916.03
  4. Step 4: Simplify right side
    455,870.79x = 158,480,408,481.66
  5. Step 5: Solve for x
    x = 158,480,408,481.66/455,870.79
  6. Step 6: Final answer
    x = 347,643.26

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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.