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Finding the Fourth Proportional to 285,520.40, 427,819.80 and 180,150.80

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Solution

The fourth proportional to 285,520.40, 427,819.80 and 180,150.80 is: 269,935.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,520.40 : 427,819.80 = 180,150.80 : x
  2. Step 2: Convert to fraction form
    285,520.40/427,819.80 = 180,150.80/x
  3. Step 3: Cross multiply
    285,520.40x = 427,819.80 × 180,150.80
  4. Step 4: Simplify right side
    285,520.40x = 77,072,079,225.84
  5. Step 5: Solve for x
    x = 77,072,079,225.84/285,520.40
  6. Step 6: Final answer
    x = 269,935.46

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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.