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Finding the Fourth Proportional to 407,645.88, 610,803 and 247,770.72

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Solution

The fourth proportional to 407,645.88, 610,803 and 247,770.72 is: 371,251.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,645.88 : 610,803 = 247,770.72 : x
  2. Step 2: Convert to fraction form
    407,645.88/610,803 = 247,770.72/x
  3. Step 3: Cross multiply
    407,645.88x = 610,803 × 247,770.72
  4. Step 4: Simplify right side
    407,645.88x = 151,339,099,088.16
  5. Step 5: Solve for x
    x = 151,339,099,088.16/407,645.88
  6. Step 6: Final answer
    x = 371,251.39

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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.