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Finding the Fourth Proportional to 490,270.05, 735,666.30 and 190,760.40

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Solution

The fourth proportional to 490,270.05, 735,666.30 and 190,760.40 is: 286,242.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,270.05 : 735,666.30 = 190,760.40 : x
  2. Step 2: Convert to fraction form
    490,270.05/735,666.30 = 190,760.40/x
  3. Step 3: Cross multiply
    490,270.05x = 735,666.30 × 190,760.40
  4. Step 4: Simplify right side
    490,270.05x = 140,335,997,654.52
  5. Step 5: Solve for x
    x = 140,335,997,654.52/490,270.05
  6. Step 6: Final answer
    x = 286,242.24

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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.