Home / 219,007.06-302,202.29-128,342.27

Finding the Fourth Proportional to 219,007.06, 302,202.29 and 128,342.27

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Solution

The fourth proportional to 219,007.06, 302,202.29 and 128,342.27 is: 177,096.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,007.06 : 302,202.29 = 128,342.27 : x
  2. Step 2: Convert to fraction form
    219,007.06/302,202.29 = 128,342.27/x
  3. Step 3: Cross multiply
    219,007.06x = 302,202.29 × 128,342.27
  4. Step 4: Simplify right side
    219,007.06x = 38,785,328,974.16
  5. Step 5: Solve for x
    x = 38,785,328,974.16/219,007.06
  6. Step 6: Final answer
    x = 177,096.25

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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.