Home / 219,365.07-302,725.80-128,722.54

Finding the Fourth Proportional to 219,365.07, 302,725.80 and 128,722.54

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Solution

The fourth proportional to 219,365.07, 302,725.80 and 128,722.54 is: 177,638.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,365.07 : 302,725.80 = 128,722.54 : x
  2. Step 2: Convert to fraction form
    219,365.07/302,725.80 = 128,722.54/x
  3. Step 3: Cross multiply
    219,365.07x = 302,725.80 × 128,722.54
  4. Step 4: Simplify right side
    219,365.07x = 38,967,633,958.36
  5. Step 5: Solve for x
    x = 38,967,633,958.36/219,365.07
  6. Step 6: Final answer
    x = 177,638.28

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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.