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Finding the Fourth Proportional to 438,573.54, 605,064.74 and 275,160.80

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Solution

The fourth proportional to 438,573.54, 605,064.74 and 275,160.80 is: 379,617.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,573.54 : 605,064.74 = 275,160.80 : x
  2. Step 2: Convert to fraction form
    438,573.54/605,064.74 = 275,160.80/x
  3. Step 3: Cross multiply
    438,573.54x = 605,064.74 × 275,160.80
  4. Step 4: Simplify right side
    438,573.54x = 166,490,097,910.19
  5. Step 5: Solve for x
    x = 166,490,097,910.19/438,573.54
  6. Step 6: Final answer
    x = 379,617.29

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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.