Home / 427,215.36-640,886.74-157,322.73

Finding the Fourth Proportional to 427,215.36, 640,886.74 and 157,322.73

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Solution

The fourth proportional to 427,215.36, 640,886.74 and 157,322.73 is: 236,007.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,215.36 : 640,886.74 = 157,322.73 : x
  2. Step 2: Convert to fraction form
    427,215.36/640,886.74 = 157,322.73/x
  3. Step 3: Cross multiply
    427,215.36x = 640,886.74 × 157,322.73
  4. Step 4: Simplify right side
    427,215.36x = 100,826,051,557.60
  5. Step 5: Solve for x
    x = 100,826,051,557.60/427,215.36
  6. Step 6: Final answer
    x = 236,007.55

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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.