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Finding the Fourth Proportional to 291,819, 437,728.50 and 70,203

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Solution

The fourth proportional to 291,819, 437,728.50 and 70,203 is: 105,304.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,819 : 437,728.50 = 70,203 : x
  2. Step 2: Convert to fraction form
    291,819/437,728.50 = 70,203/x
  3. Step 3: Cross multiply
    291,819x = 437,728.50 × 70,203
  4. Step 4: Simplify right side
    291,819x = 30,729,853,885.50
  5. Step 5: Solve for x
    x = 30,729,853,885.50/291,819
  6. Step 6: Final answer
    x = 105,304.50

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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.