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Finding the Fourth Proportional to 384,143.40, 576,215.10 and 162,498.60

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Solution

The fourth proportional to 384,143.40, 576,215.10 and 162,498.60 is: 243,747.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,143.40 : 576,215.10 = 162,498.60 : x
  2. Step 2: Convert to fraction form
    384,143.40/576,215.10 = 162,498.60/x
  3. Step 3: Cross multiply
    384,143.40x = 576,215.10 × 162,498.60
  4. Step 4: Simplify right side
    384,143.40x = 93,634,147,048.86
  5. Step 5: Solve for x
    x = 93,634,147,048.86/384,143.40
  6. Step 6: Final answer
    x = 243,747.90

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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.