Home / 380,412.45-570,569.47-143,724.38

Finding the Fourth Proportional to 380,412.45, 570,569.47 and 143,724.38

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Solution

The fourth proportional to 380,412.45, 570,569.47 and 143,724.38 is: 215,567.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,412.45 : 570,569.47 = 143,724.38 : x
  2. Step 2: Convert to fraction form
    380,412.45/570,569.47 = 143,724.38/x
  3. Step 3: Cross multiply
    380,412.45x = 570,569.47 × 143,724.38
  4. Step 4: Simplify right side
    380,412.45x = 82,004,740,110.52
  5. Step 5: Solve for x
    x = 82,004,740,110.52/380,412.45
  6. Step 6: Final answer
    x = 215,567.97

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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.