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Finding the Fourth Proportional to 217,164.60, 325,631.70 and 76,927.80

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Solution

The fourth proportional to 217,164.60, 325,631.70 and 76,927.80 is: 115,350.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,164.60 : 325,631.70 = 76,927.80 : x
  2. Step 2: Convert to fraction form
    217,164.60/325,631.70 = 76,927.80/x
  3. Step 3: Cross multiply
    217,164.60x = 325,631.70 × 76,927.80
  4. Step 4: Simplify right side
    217,164.60x = 25,050,130,291.26
  5. Step 5: Solve for x
    x = 25,050,130,291.26/217,164.60
  6. Step 6: Final answer
    x = 115,350.89

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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.