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Finding the Fourth Proportional to 285,664.40, 428,496.60 and 75,323.60

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Solution

The fourth proportional to 285,664.40, 428,496.60 and 75,323.60 is: 112,985.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,664.40 : 428,496.60 = 75,323.60 : x
  2. Step 2: Convert to fraction form
    285,664.40/428,496.60 = 75,323.60/x
  3. Step 3: Cross multiply
    285,664.40x = 428,496.60 × 75,323.60
  4. Step 4: Simplify right side
    285,664.40x = 32,275,906,499.76
  5. Step 5: Solve for x
    x = 32,275,906,499.76/285,664.40
  6. Step 6: Final answer
    x = 112,985.40

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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.