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Finding the Fourth Proportional to 609,159.78, 913,800.87 and 209,747.70

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Solution

The fourth proportional to 609,159.78, 913,800.87 and 209,747.70 is: 314,642.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,159.78 : 913,800.87 = 209,747.70 : x
  2. Step 2: Convert to fraction form
    609,159.78/913,800.87 = 209,747.70/x
  3. Step 3: Cross multiply
    609,159.78x = 913,800.87 × 209,747.70
  4. Step 4: Simplify right side
    609,159.78x = 191,667,630,740.50
  5. Step 5: Solve for x
    x = 191,667,630,740.50/609,159.78
  6. Step 6: Final answer
    x = 314,642.62

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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.