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Finding the Fourth Proportional to 609,203.85, 913,263 and 289,158.27

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Solution

The fourth proportional to 609,203.85, 913,263 and 289,158.27 is: 433,479.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,203.85 : 913,263 = 289,158.27 : x
  2. Step 2: Convert to fraction form
    609,203.85/913,263 = 289,158.27/x
  3. Step 3: Cross multiply
    609,203.85x = 913,263 × 289,158.27
  4. Step 4: Simplify right side
    609,203.85x = 264,077,549,135.01
  5. Step 5: Solve for x
    x = 264,077,549,135.01/609,203.85
  6. Step 6: Final answer
    x = 433,479.78

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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.