Home / 445,284.48-668,036-129,744.32

Finding the Fourth Proportional to 445,284.48, 668,036 and 129,744.32

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Solution

The fourth proportional to 445,284.48, 668,036 and 129,744.32 is: 194,648.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,284.48 : 668,036 = 129,744.32 : x
  2. Step 2: Convert to fraction form
    445,284.48/668,036 = 129,744.32/x
  3. Step 3: Cross multiply
    445,284.48x = 668,036 × 129,744.32
  4. Step 4: Simplify right side
    445,284.48x = 86,673,876,555.52
  5. Step 5: Solve for x
    x = 86,673,876,555.52/445,284.48
  6. Step 6: Final answer
    x = 194,648.32

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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.