Home / 219,277.32-302,551.38-128,628.60

Finding the Fourth Proportional to 219,277.32, 302,551.38 and 128,628.60

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Solution

The fourth proportional to 219,277.32, 302,551.38 and 128,628.60 is: 177,477.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,277.32 : 302,551.38 = 128,628.60 : x
  2. Step 2: Convert to fraction form
    219,277.32/302,551.38 = 128,628.60/x
  3. Step 3: Cross multiply
    219,277.32x = 302,551.38 × 128,628.60
  4. Step 4: Simplify right side
    219,277.32x = 38,916,760,437.47
  5. Step 5: Solve for x
    x = 38,916,760,437.47/219,277.32
  6. Step 6: Final answer
    x = 177,477.36

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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.