Home / 286,221.45-394,987.37-157,165.50

Finding the Fourth Proportional to 286,221.45, 394,987.37 and 157,165.50

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Solution

The fourth proportional to 286,221.45, 394,987.37 and 157,165.50 is: 216,889.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,221.45 : 394,987.37 = 157,165.50 : x
  2. Step 2: Convert to fraction form
    286,221.45/394,987.37 = 157,165.50/x
  3. Step 3: Cross multiply
    286,221.45x = 394,987.37 × 157,165.50
  4. Step 4: Simplify right side
    286,221.45x = 62,078,386,713.91
  5. Step 5: Solve for x
    x = 62,078,386,713.91/286,221.45
  6. Step 6: Final answer
    x = 216,889.36

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1.5x scale

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.