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Finding the Fourth Proportional to 405,108.30, 606,496.05 and 363,117.90

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Solution

The fourth proportional to 405,108.30, 606,496.05 and 363,117.90 is: 543,631.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,108.30 : 606,496.05 = 363,117.90 : x
  2. Step 2: Convert to fraction form
    405,108.30/606,496.05 = 363,117.90/x
  3. Step 3: Cross multiply
    405,108.30x = 606,496.05 × 363,117.90
  4. Step 4: Simplify right side
    405,108.30x = 220,229,572,034.30
  5. Step 5: Solve for x
    x = 220,229,572,034.30/405,108.30
  6. Step 6: Final answer
    x = 543,631.35

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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.