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Finding the Fourth Proportional to 171,651.40, 257,477.10 and 159,987.40

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Solution

The fourth proportional to 171,651.40, 257,477.10 and 159,987.40 is: 239,981.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,651.40 : 257,477.10 = 159,987.40 : x
  2. Step 2: Convert to fraction form
    171,651.40/257,477.10 = 159,987.40/x
  3. Step 3: Cross multiply
    171,651.40x = 257,477.10 × 159,987.40
  4. Step 4: Simplify right side
    171,651.40x = 41,193,091,788.54
  5. Step 5: Solve for x
    x = 41,193,091,788.54/171,651.40
  6. Step 6: Final answer
    x = 239,981.10

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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.