Home / 390,160.23-585,250.72-137,383.23

Finding the Fourth Proportional to 390,160.23, 585,250.72 and 137,383.23

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Solution

The fourth proportional to 390,160.23, 585,250.72 and 137,383.23 is: 206,078.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,160.23 : 585,250.72 = 137,383.23 : x
  2. Step 2: Convert to fraction form
    390,160.23/585,250.72 = 137,383.23/x
  3. Step 3: Cross multiply
    390,160.23x = 585,250.72 × 137,383.23
  4. Step 4: Simplify right side
    390,160.23x = 80,403,634,273.43
  5. Step 5: Solve for x
    x = 80,403,634,273.43/390,160.23
  6. Step 6: Final answer
    x = 206,078.50

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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.