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Finding the Fourth Proportional to 217,047.80, 325,878.90 and 170,353.40

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Solution

The fourth proportional to 217,047.80, 325,878.90 and 170,353.40 is: 255,771.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,047.80 : 325,878.90 = 170,353.40 : x
  2. Step 2: Convert to fraction form
    217,047.80/325,878.90 = 170,353.40/x
  3. Step 3: Cross multiply
    217,047.80x = 325,878.90 × 170,353.40
  4. Step 4: Simplify right side
    217,047.80x = 55,514,578,603.26
  5. Step 5: Solve for x
    x = 55,514,578,603.26/217,047.80
  6. Step 6: Final answer
    x = 255,771.21

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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.