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Finding the Fourth Proportional to 228,644.80, 342,967.20 and 70,921.60

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Solution

The fourth proportional to 228,644.80, 342,967.20 and 70,921.60 is: 106,382.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,644.80 : 342,967.20 = 70,921.60 : x
  2. Step 2: Convert to fraction form
    228,644.80/342,967.20 = 70,921.60/x
  3. Step 3: Cross multiply
    228,644.80x = 342,967.20 × 70,921.60
  4. Step 4: Simplify right side
    228,644.80x = 24,323,782,571.52
  5. Step 5: Solve for x
    x = 24,323,782,571.52/228,644.80
  6. Step 6: Final answer
    x = 106,382.40

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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.