Home / 219,051.54-302,233.68-128,358.81

Finding the Fourth Proportional to 219,051.54, 302,233.68 and 128,358.81

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Solution

The fourth proportional to 219,051.54, 302,233.68 and 128,358.81 is: 177,101.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,051.54 : 302,233.68 = 128,358.81 : x
  2. Step 2: Convert to fraction form
    219,051.54/302,233.68 = 128,358.81/x
  3. Step 3: Cross multiply
    219,051.54x = 302,233.68 × 128,358.81
  4. Step 4: Simplify right side
    219,051.54x = 38,794,355,506.72
  5. Step 5: Solve for x
    x = 38,794,355,506.72/219,051.54
  6. Step 6: Final answer
    x = 177,101.50

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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.