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Finding the Fourth Proportional to 291,738.70, 437,608.05 and 70,122.70

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Solution

The fourth proportional to 291,738.70, 437,608.05 and 70,122.70 is: 105,184.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,738.70 : 437,608.05 = 70,122.70 : x
  2. Step 2: Convert to fraction form
    291,738.70/437,608.05 = 70,122.70/x
  3. Step 3: Cross multiply
    291,738.70x = 437,608.05 × 70,122.70
  4. Step 4: Simplify right side
    291,738.70x = 30,686,258,007.74
  5. Step 5: Solve for x
    x = 30,686,258,007.74/291,738.70
  6. Step 6: Final answer
    x = 105,184.05

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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.