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Finding the Fourth Proportional to 171,009.40, 256,514.10 and 131,643.40

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Solution

The fourth proportional to 171,009.40, 256,514.10 and 131,643.40 is: 197,465.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,009.40 : 256,514.10 = 131,643.40 : x
  2. Step 2: Convert to fraction form
    171,009.40/256,514.10 = 131,643.40/x
  3. Step 3: Cross multiply
    171,009.40x = 256,514.10 × 131,643.40
  4. Step 4: Simplify right side
    171,009.40x = 33,768,388,271.94
  5. Step 5: Solve for x
    x = 33,768,388,271.94/171,009.40
  6. Step 6: Final answer
    x = 197,465.10

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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.