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Finding the Fourth Proportional to 171,625.40, 257,438.10 and 53,308.70

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Solution

The fourth proportional to 171,625.40, 257,438.10 and 53,308.70 is: 79,963.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,625.40 : 257,438.10 = 53,308.70 : x
  2. Step 2: Convert to fraction form
    171,625.40/257,438.10 = 53,308.70/x
  3. Step 3: Cross multiply
    171,625.40x = 257,438.10 × 53,308.70
  4. Step 4: Simplify right side
    171,625.40x = 13,723,690,441.47
  5. Step 5: Solve for x
    x = 13,723,690,441.47/171,625.40
  6. Step 6: Final answer
    x = 79,963.05

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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.