Home / 219,289.96-302,587.38-128,611.72

Finding the Fourth Proportional to 219,289.96, 302,587.38 and 128,611.72

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Solution

The fourth proportional to 219,289.96, 302,587.38 and 128,611.72 is: 177,464.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,289.96 : 302,587.38 = 128,611.72 : x
  2. Step 2: Convert to fraction form
    219,289.96/302,587.38 = 128,611.72/x
  3. Step 3: Cross multiply
    219,289.96x = 302,587.38 × 128,611.72
  4. Step 4: Simplify right side
    219,289.96x = 38,916,283,392.09
  5. Step 5: Solve for x
    x = 38,916,283,392.09/219,289.96
  6. Step 6: Final answer
    x = 177,464.96

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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.