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Finding the Fourth Proportional to 291,900.70, 437,818.65 and 239,218.30

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Solution

The fourth proportional to 291,900.70, 437,818.65 and 239,218.30 is: 358,800.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,900.70 : 437,818.65 = 239,218.30 : x
  2. Step 2: Convert to fraction form
    291,900.70/437,818.65 = 239,218.30/x
  3. Step 3: Cross multiply
    291,900.70x = 437,818.65 × 239,218.30
  4. Step 4: Simplify right side
    291,900.70x = 104,734,233,161.30
  5. Step 5: Solve for x
    x = 104,734,233,161.30/291,900.70
  6. Step 6: Final answer
    x = 358,800.90

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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.