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Finding the Fourth Proportional to 609,364.29, 913,486.69 and 209,910.11

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Solution

The fourth proportional to 609,364.29, 913,486.69 and 209,910.11 is: 314,672.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,364.29 : 913,486.69 = 209,910.11 : x
  2. Step 2: Convert to fraction form
    609,364.29/913,486.69 = 209,910.11/x
  3. Step 3: Cross multiply
    609,364.29x = 913,486.69 × 209,910.11
  4. Step 4: Simplify right side
    609,364.29x = 191,750,090,531.89
  5. Step 5: Solve for x
    x = 191,750,090,531.89/609,364.29
  6. Step 6: Final answer
    x = 314,672.35

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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.