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Finding the Fourth Proportional to 220,475.81, 304,247.81 and 129,835.60

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Solution

The fourth proportional to 220,475.81, 304,247.81 and 129,835.60 is: 179,167.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,475.81 : 304,247.81 = 129,835.60 : x
  2. Step 2: Convert to fraction form
    220,475.81/304,247.81 = 129,835.60/x
  3. Step 3: Cross multiply
    220,475.81x = 304,247.81 × 129,835.60
  4. Step 4: Simplify right side
    220,475.81x = 39,502,196,524.01
  5. Step 5: Solve for x
    x = 39,502,196,524.01/220,475.81
  6. Step 6: Final answer
    x = 179,167.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.