Home / 283,067.45-390,639.03-155,743.28

Finding the Fourth Proportional to 283,067.45, 390,639.03 and 155,743.28

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Solution

The fourth proportional to 283,067.45, 390,639.03 and 155,743.28 is: 214,929.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,067.45 : 390,639.03 = 155,743.28 : x
  2. Step 2: Convert to fraction form
    283,067.45/390,639.03 = 155,743.28/x
  3. Step 3: Cross multiply
    283,067.45x = 390,639.03 × 155,743.28
  4. Step 4: Simplify right side
    283,067.45x = 60,839,403,828.22
  5. Step 5: Solve for x
    x = 60,839,403,828.22/283,067.45
  6. Step 6: Final answer
    x = 214,929.00

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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.