Home / 219,587.16-303,032.64-128,944.20

Finding the Fourth Proportional to 219,587.16, 303,032.64 and 128,944.20

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Solution

The fourth proportional to 219,587.16, 303,032.64 and 128,944.20 is: 177,944.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,587.16 : 303,032.64 = 128,944.20 : x
  2. Step 2: Convert to fraction form
    219,587.16/303,032.64 = 128,944.20/x
  3. Step 3: Cross multiply
    219,587.16x = 303,032.64 × 128,944.20
  4. Step 4: Simplify right side
    219,587.16x = 39,074,301,338.69
  5. Step 5: Solve for x
    x = 39,074,301,338.69/219,587.16
  6. Step 6: Final answer
    x = 177,944.38

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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.