Home / 213,438.42-320,146.05-108,254.64

Finding the Fourth Proportional to 213,438.42, 320,146.05 and 108,254.64

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Solution

The fourth proportional to 213,438.42, 320,146.05 and 108,254.64 is: 162,376.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,438.42 : 320,146.05 = 108,254.64 : x
  2. Step 2: Convert to fraction form
    213,438.42/320,146.05 = 108,254.64/x
  3. Step 3: Cross multiply
    213,438.42x = 320,146.05 × 108,254.64
  4. Step 4: Simplify right side
    213,438.42x = 34,657,295,390.17
  5. Step 5: Solve for x
    x = 34,657,295,390.17/213,438.42
  6. Step 6: Final answer
    x = 162,376.09

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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.