Home / 312,907.32-469,419.36-142,141.03

Finding the Fourth Proportional to 312,907.32, 469,419.36 and 142,141.03

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Solution

The fourth proportional to 312,907.32, 469,419.36 and 142,141.03 is: 213,238.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,907.32 : 469,419.36 = 142,141.03 : x
  2. Step 2: Convert to fraction form
    312,907.32/469,419.36 = 142,141.03/x
  3. Step 3: Cross multiply
    312,907.32x = 469,419.36 × 142,141.03
  4. Step 4: Simplify right side
    312,907.32x = 66,723,751,332.34
  5. Step 5: Solve for x
    x = 66,723,751,332.34/312,907.32
  6. Step 6: Final answer
    x = 213,238.06

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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.