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Finding the Fourth Proportional to 523,614.40, 785,429.49 and 199,420.44

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Solution

The fourth proportional to 523,614.40, 785,429.49 and 199,420.44 is: 299,133.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,614.40 : 785,429.49 = 199,420.44 : x
  2. Step 2: Convert to fraction form
    523,614.40/785,429.49 = 199,420.44/x
  3. Step 3: Cross multiply
    523,614.40x = 785,429.49 × 199,420.44
  4. Step 4: Simplify right side
    523,614.40x = 156,630,694,484.78
  5. Step 5: Solve for x
    x = 156,630,694,484.78/523,614.40
  6. Step 6: Final answer
    x = 299,133.66

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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.