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Finding the Fourth Proportional to 171,617.60, 257,426.40 and 45,257.60

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Solution

The fourth proportional to 171,617.60, 257,426.40 and 45,257.60 is: 67,886.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,617.60 : 257,426.40 = 45,257.60 : x
  2. Step 2: Convert to fraction form
    171,617.60/257,426.40 = 45,257.60/x
  3. Step 3: Cross multiply
    171,617.60x = 257,426.40 × 45,257.60
  4. Step 4: Simplify right side
    171,617.60x = 11,650,501,040.64
  5. Step 5: Solve for x
    x = 11,650,501,040.64/171,617.60
  6. Step 6: Final answer
    x = 67,886.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.