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Finding the Fourth Proportional to 613,193.42, 919,913.15 and 213,726.94

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Solution

The fourth proportional to 613,193.42, 919,913.15 and 213,726.94 is: 320,633.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,193.42 : 919,913.15 = 213,726.94 : x
  2. Step 2: Convert to fraction form
    613,193.42/919,913.15 = 213,726.94/x
  3. Step 3: Cross multiply
    613,193.42x = 919,913.15 × 213,726.94
  4. Step 4: Simplify right side
    613,193.42x = 196,610,220,849.80
  5. Step 5: Solve for x
    x = 196,610,220,849.80/613,193.42
  6. Step 6: Final answer
    x = 320,633.28

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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.