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Finding the Fourth Proportional to 309,761.83, 427,621.50 and 207,750.01

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Solution

The fourth proportional to 309,761.83, 427,621.50 and 207,750.01 is: 286,795.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,761.83 : 427,621.50 = 207,750.01 : x
  2. Step 2: Convert to fraction form
    309,761.83/427,621.50 = 207,750.01/x
  3. Step 3: Cross multiply
    309,761.83x = 427,621.50 × 207,750.01
  4. Step 4: Simplify right side
    309,761.83x = 88,838,370,901.22
  5. Step 5: Solve for x
    x = 88,838,370,901.22/309,761.83
  6. Step 6: Final answer
    x = 286,795.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.