Home / 219,502.29-302,906.94-128,856.81

Finding the Fourth Proportional to 219,502.29, 302,906.94 and 128,856.81

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Solution

The fourth proportional to 219,502.29, 302,906.94 and 128,856.81 is: 177,818.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,502.29 : 302,906.94 = 128,856.81 : x
  2. Step 2: Convert to fraction form
    219,502.29/302,906.94 = 128,856.81/x
  3. Step 3: Cross multiply
    219,502.29x = 302,906.94 × 128,856.81
  4. Step 4: Simplify right side
    219,502.29x = 39,031,622,015.26
  5. Step 5: Solve for x
    x = 39,031,622,015.26/219,502.29
  6. Step 6: Final answer
    x = 177,818.75

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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.