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Finding the Fourth Proportional to 384,142.10, 576,213.15 and 103,658.90

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Solution

The fourth proportional to 384,142.10, 576,213.15 and 103,658.90 is: 155,488.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,142.10 : 576,213.15 = 103,658.90 : x
  2. Step 2: Convert to fraction form
    384,142.10/576,213.15 = 103,658.90/x
  3. Step 3: Cross multiply
    384,142.10x = 576,213.15 × 103,658.90
  4. Step 4: Simplify right side
    384,142.10x = 59,729,621,294.54
  5. Step 5: Solve for x
    x = 59,729,621,294.54/384,142.10
  6. Step 6: Final answer
    x = 155,488.35

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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.