Home / 219,485.39-302,889.73-128,841.36

Finding the Fourth Proportional to 219,485.39, 302,889.73 and 128,841.36

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Solution

The fourth proportional to 219,485.39, 302,889.73 and 128,841.36 is: 177,801.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,485.39 : 302,889.73 = 128,841.36 : x
  2. Step 2: Convert to fraction form
    219,485.39/302,889.73 = 128,841.36/x
  3. Step 3: Cross multiply
    219,485.39x = 302,889.73 × 128,841.36
  4. Step 4: Simplify right side
    219,485.39x = 39,024,723,532.43
  5. Step 5: Solve for x
    x = 39,024,723,532.43/219,485.39
  6. Step 6: Final answer
    x = 177,801.01

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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.