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Finding the Fourth Proportional to 171,486.72, 257,230.08 and 71,592.40

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Solution

The fourth proportional to 171,486.72, 257,230.08 and 71,592.40 is: 107,388.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,486.72 : 257,230.08 = 71,592.40 : x
  2. Step 2: Convert to fraction form
    171,486.72/257,230.08 = 71,592.40/x
  3. Step 3: Cross multiply
    171,486.72x = 257,230.08 × 71,592.40
  4. Step 4: Simplify right side
    171,486.72x = 18,415,718,779.39
  5. Step 5: Solve for x
    x = 18,415,718,779.39/171,486.72
  6. Step 6: Final answer
    x = 107,388.60

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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.