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Finding the Fourth Proportional to 419,749.60, 579,237.56 and 228,758.88

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Solution

The fourth proportional to 419,749.60, 579,237.56 and 228,758.88 is: 315,678.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,749.60 : 579,237.56 = 228,758.88 : x
  2. Step 2: Convert to fraction form
    419,749.60/579,237.56 = 228,758.88/x
  3. Step 3: Cross multiply
    419,749.60x = 579,237.56 × 228,758.88
  4. Step 4: Simplify right side
    419,749.60x = 132,505,735,479.53
  5. Step 5: Solve for x
    x = 132,505,735,479.53/419,749.60
  6. Step 6: Final answer
    x = 315,678.05

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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.