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Finding the Fourth Proportional to 213,383.92, 294,376.80 and 122,720.08

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Solution

The fourth proportional to 213,383.92, 294,376.80 and 122,720.08 is: 169,300.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,383.92 : 294,376.80 = 122,720.08 : x
  2. Step 2: Convert to fraction form
    213,383.92/294,376.80 = 122,720.08/x
  3. Step 3: Cross multiply
    213,383.92x = 294,376.80 × 122,720.08
  4. Step 4: Simplify right side
    213,383.92x = 36,125,944,446.14
  5. Step 5: Solve for x
    x = 36,125,944,446.14/213,383.92
  6. Step 6: Final answer
    x = 169,300.22

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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.