Home / 223,719.36-308,740.05-128,244.12

Finding the Fourth Proportional to 223,719.36, 308,740.05 and 128,244.12

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Solution

The fourth proportional to 223,719.36, 308,740.05 and 128,244.12 is: 176,981.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,719.36 : 308,740.05 = 128,244.12 : x
  2. Step 2: Convert to fraction form
    223,719.36/308,740.05 = 128,244.12/x
  3. Step 3: Cross multiply
    223,719.36x = 308,740.05 × 128,244.12
  4. Step 4: Simplify right side
    223,719.36x = 39,594,096,021.01
  5. Step 5: Solve for x
    x = 39,594,096,021.01/223,719.36
  6. Step 6: Final answer
    x = 176,981.09

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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.