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Finding the Fourth Proportional to 171,403.67, 257,009.29 and 117,429.30

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Solution

The fourth proportional to 171,403.67, 257,009.29 and 117,429.30 is: 176,078.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,403.67 : 257,009.29 = 117,429.30 : x
  2. Step 2: Convert to fraction form
    171,403.67/257,009.29 = 117,429.30/x
  3. Step 3: Cross multiply
    171,403.67x = 257,009.29 × 117,429.30
  4. Step 4: Simplify right side
    171,403.67x = 30,180,420,724.62
  5. Step 5: Solve for x
    x = 30,180,420,724.62/171,403.67
  6. Step 6: Final answer
    x = 176,078.03

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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.