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Finding the Fourth Proportional to 291,708.75, 437,563.13 and 70,092.75

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Solution

The fourth proportional to 291,708.75, 437,563.13 and 70,092.75 is: 105,139.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,708.75 : 437,563.13 = 70,092.75 : x
  2. Step 2: Convert to fraction form
    291,708.75/437,563.13 = 70,092.75/x
  3. Step 3: Cross multiply
    291,708.75x = 437,563.13 × 70,092.75
  4. Step 4: Simplify right side
    291,708.75x = 30,670,002,729.84
  5. Step 5: Solve for x
    x = 30,670,002,729.84/291,708.75
  6. Step 6: Final answer
    x = 105,139.13

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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.