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Finding the Fourth Proportional to 455,172.98, 628,138.32 and 253,968.98

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Solution

The fourth proportional to 455,172.98, 628,138.32 and 253,968.98 is: 350,476.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,172.98 : 628,138.32 = 253,968.98 : x
  2. Step 2: Convert to fraction form
    455,172.98/628,138.32 = 253,968.98/x
  3. Step 3: Cross multiply
    455,172.98x = 628,138.32 × 253,968.98
  4. Step 4: Simplify right side
    455,172.98x = 159,527,648,429.31
  5. Step 5: Solve for x
    x = 159,527,648,429.31/455,172.98
  6. Step 6: Final answer
    x = 350,476.97

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1.5x scale

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.