Home / 282,742.88-390,193.62-161,923.28

Finding the Fourth Proportional to 282,742.88, 390,193.62 and 161,923.28

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Solution

The fourth proportional to 282,742.88, 390,193.62 and 161,923.28 is: 223,458.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,742.88 : 390,193.62 = 161,923.28 : x
  2. Step 2: Convert to fraction form
    282,742.88/390,193.62 = 161,923.28/x
  3. Step 3: Cross multiply
    282,742.88x = 390,193.62 × 161,923.28
  4. Step 4: Simplify right side
    282,742.88x = 63,181,430,785.47
  5. Step 5: Solve for x
    x = 63,181,430,785.47/282,742.88
  6. Step 6: Final answer
    x = 223,458.96

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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.