Home / 427,036.83-640,581.66-142,752.96

Finding the Fourth Proportional to 427,036.83, 640,581.66 and 142,752.96

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Solution

The fourth proportional to 427,036.83, 640,581.66 and 142,752.96 is: 214,138.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,036.83 : 640,581.66 = 142,752.96 : x
  2. Step 2: Convert to fraction form
    427,036.83/640,581.66 = 142,752.96/x
  3. Step 3: Cross multiply
    427,036.83x = 640,581.66 × 142,752.96
  4. Step 4: Simplify right side
    427,036.83x = 91,444,928,086.71
  5. Step 5: Solve for x
    x = 91,444,928,086.71/427,036.83
  6. Step 6: Final answer
    x = 214,138.27

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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.