Home / 307,212.81-423,947.60-171,238.64

Finding the Fourth Proportional to 307,212.81, 423,947.60 and 171,238.64

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Solution

The fourth proportional to 307,212.81, 423,947.60 and 171,238.64 is: 236,305.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,212.81 : 423,947.60 = 171,238.64 : x
  2. Step 2: Convert to fraction form
    307,212.81/423,947.60 = 171,238.64/x
  3. Step 3: Cross multiply
    307,212.81x = 423,947.60 × 171,238.64
  4. Step 4: Simplify right side
    307,212.81x = 72,596,213,059.20
  5. Step 5: Solve for x
    x = 72,596,213,059.20/307,212.81
  6. Step 6: Final answer
    x = 236,305.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.