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Finding the Fourth Proportional to 247,907.40, 342,183.15 and 145,991.98

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Solution

The fourth proportional to 247,907.40, 342,183.15 and 145,991.98 is: 201,510.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,907.40 : 342,183.15 = 145,991.98 : x
  2. Step 2: Convert to fraction form
    247,907.40/342,183.15 = 145,991.98/x
  3. Step 3: Cross multiply
    247,907.40x = 342,183.15 × 145,991.98
  4. Step 4: Simplify right side
    247,907.40x = 49,955,995,591.14
  5. Step 5: Solve for x
    x = 49,955,995,591.14/247,907.40
  6. Step 6: Final answer
    x = 201,510.71

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1.5x scale

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.