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Finding the Fourth Proportional to 285,505.21, 428,451.61 and 152,480.94

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Solution

The fourth proportional to 285,505.21, 428,451.61 and 152,480.94 is: 228,824.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,505.21 : 428,451.61 = 152,480.94 : x
  2. Step 2: Convert to fraction form
    285,505.21/428,451.61 = 152,480.94/x
  3. Step 3: Cross multiply
    285,505.21x = 428,451.61 × 152,480.94
  4. Step 4: Simplify right side
    285,505.21x = 65,330,704,237.31
  5. Step 5: Solve for x
    x = 65,330,704,237.31/285,505.21
  6. Step 6: Final answer
    x = 228,824.91

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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.