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Finding the Fourth Proportional to 373,485.02, 515,406.12 and 203,715.50

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Solution

The fourth proportional to 373,485.02, 515,406.12 and 203,715.50 is: 281,125.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,485.02 : 515,406.12 = 203,715.50 : x
  2. Step 2: Convert to fraction form
    373,485.02/515,406.12 = 203,715.50/x
  3. Step 3: Cross multiply
    373,485.02x = 515,406.12 × 203,715.50
  4. Step 4: Simplify right side
    373,485.02x = 104,996,215,438.86
  5. Step 5: Solve for x
    x = 104,996,215,438.86/373,485.02
  6. Step 6: Final answer
    x = 281,125.64

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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.