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Finding the Fourth Proportional to 285,532.80, 428,299.20 and 174,940.80

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Solution

The fourth proportional to 285,532.80, 428,299.20 and 174,940.80 is: 262,411.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,532.80 : 428,299.20 = 174,940.80 : x
  2. Step 2: Convert to fraction form
    285,532.80/428,299.20 = 174,940.80/x
  3. Step 3: Cross multiply
    285,532.80x = 428,299.20 × 174,940.80
  4. Step 4: Simplify right side
    285,532.80x = 74,927,004,687.36
  5. Step 5: Solve for x
    x = 74,927,004,687.36/285,532.80
  6. Step 6: Final answer
    x = 262,411.20

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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.