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Finding the Fourth Proportional to 309,605.97, 427,254.57 and 171,783.62

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Solution

The fourth proportional to 309,605.97, 427,254.57 and 171,783.62 is: 237,060.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,605.97 : 427,254.57 = 171,783.62 : x
  2. Step 2: Convert to fraction form
    309,605.97/427,254.57 = 171,783.62/x
  3. Step 3: Cross multiply
    309,605.97x = 427,254.57 × 171,783.62
  4. Step 4: Simplify right side
    309,605.97x = 73,395,334,559.87
  5. Step 5: Solve for x
    x = 73,395,334,559.87/309,605.97
  6. Step 6: Final answer
    x = 237,060.46

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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.