Home / 380,771.12-571,185.36-128,052.33

Finding the Fourth Proportional to 380,771.12, 571,185.36 and 128,052.33

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Solution

The fourth proportional to 380,771.12, 571,185.36 and 128,052.33 is: 192,088.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,771.12 : 571,185.36 = 128,052.33 : x
  2. Step 2: Convert to fraction form
    380,771.12/571,185.36 = 128,052.33/x
  3. Step 3: Cross multiply
    380,771.12x = 571,185.36 × 128,052.33
  4. Step 4: Simplify right side
    380,771.12x = 73,141,616,209.89
  5. Step 5: Solve for x
    x = 73,141,616,209.89/380,771.12
  6. Step 6: Final answer
    x = 192,088.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.