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Finding the Fourth Proportional to 388,099.86, 535,350.80 and 252,224.31

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Solution

The fourth proportional to 388,099.86, 535,350.80 and 252,224.31 is: 347,922.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,099.86 : 535,350.80 = 252,224.31 : x
  2. Step 2: Convert to fraction form
    388,099.86/535,350.80 = 252,224.31/x
  3. Step 3: Cross multiply
    388,099.86x = 535,350.80 × 252,224.31
  4. Step 4: Simplify right side
    388,099.86x = 135,028,484,091.76
  5. Step 5: Solve for x
    x = 135,028,484,091.76/388,099.86
  6. Step 6: Final answer
    x = 347,922.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.