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Finding the Fourth Proportional to 370,858.20, 556,305.60 and 193,711.20

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Solution

The fourth proportional to 370,858.20, 556,305.60 and 193,711.20 is: 290,576.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,858.20 : 556,305.60 = 193,711.20 : x
  2. Step 2: Convert to fraction form
    370,858.20/556,305.60 = 193,711.20/x
  3. Step 3: Cross multiply
    370,858.20x = 556,305.60 × 193,711.20
  4. Step 4: Simplify right side
    370,858.20x = 107,762,625,342.72
  5. Step 5: Solve for x
    x = 107,762,625,342.72/370,858.20
  6. Step 6: Final answer
    x = 290,576.36

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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.