Home / 219,582.15-303,025.73-128,939.19

Finding the Fourth Proportional to 219,582.15, 303,025.73 and 128,939.19

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Solution

The fourth proportional to 219,582.15, 303,025.73 and 128,939.19 is: 177,937.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,582.15 : 303,025.73 = 128,939.19 : x
  2. Step 2: Convert to fraction form
    219,582.15/303,025.73 = 128,939.19/x
  3. Step 3: Cross multiply
    219,582.15x = 303,025.73 × 128,939.19
  4. Step 4: Simplify right side
    219,582.15x = 39,071,891,530.66
  5. Step 5: Solve for x
    x = 39,071,891,530.66/219,582.15
  6. Step 6: Final answer
    x = 177,937.47

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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.