Home / 219,161.81-302,493.65-128,546.97

Finding the Fourth Proportional to 219,161.81, 302,493.65 and 128,546.97

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Solution

The fourth proportional to 219,161.81, 302,493.65 and 128,546.97 is: 177,424.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,161.81 : 302,493.65 = 128,546.97 : x
  2. Step 2: Convert to fraction form
    219,161.81/302,493.65 = 128,546.97/x
  3. Step 3: Cross multiply
    219,161.81x = 302,493.65 × 128,546.97
  4. Step 4: Simplify right side
    219,161.81x = 38,884,641,509.01
  5. Step 5: Solve for x
    x = 38,884,641,509.01/219,161.81
  6. Step 6: Final answer
    x = 177,424.35

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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.