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Finding the Fourth Proportional to 309,606.08, 427,261.20 and 173,670.20

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Solution

The fourth proportional to 309,606.08, 427,261.20 and 173,670.20 is: 239,667.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,606.08 : 427,261.20 = 173,670.20 : x
  2. Step 2: Convert to fraction form
    309,606.08/427,261.20 = 173,670.20/x
  3. Step 3: Cross multiply
    309,606.08x = 427,261.20 × 173,670.20
  4. Step 4: Simplify right side
    309,606.08x = 74,202,538,056.24
  5. Step 5: Solve for x
    x = 74,202,538,056.24/309,606.08
  6. Step 6: Final answer
    x = 239,667.57

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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.