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Finding the Fourth Proportional to 455,237.60, 628,224.81 and 248,505.15

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Solution

The fourth proportional to 455,237.60, 628,224.81 and 248,505.15 is: 342,935.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,237.60 : 628,224.81 = 248,505.15 : x
  2. Step 2: Convert to fraction form
    455,237.60/628,224.81 = 248,505.15/x
  3. Step 3: Cross multiply
    455,237.60x = 628,224.81 × 248,505.15
  4. Step 4: Simplify right side
    455,237.60x = 156,117,100,642.77
  5. Step 5: Solve for x
    x = 156,117,100,642.77/455,237.60
  6. Step 6: Final answer
    x = 342,935.43

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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.