Home / 387,961.92-535,382.19-218,196.05

Finding the Fourth Proportional to 387,961.92, 535,382.19 and 218,196.05

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Solution

The fourth proportional to 387,961.92, 535,382.19 and 218,196.05 is: 301,107.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,961.92 : 535,382.19 = 218,196.05 : x
  2. Step 2: Convert to fraction form
    387,961.92/535,382.19 = 218,196.05/x
  3. Step 3: Cross multiply
    387,961.92x = 535,382.19 × 218,196.05
  4. Step 4: Simplify right side
    387,961.92x = 116,818,276,421.44
  5. Step 5: Solve for x
    x = 116,818,276,421.44/387,961.92
  6. Step 6: Final answer
    x = 301,107.58

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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.