Home / 283,142.32-390,736.46-155,817.92

Finding the Fourth Proportional to 283,142.32, 390,736.46 and 155,817.92

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Solution

The fourth proportional to 283,142.32, 390,736.46 and 155,817.92 is: 215,028.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,142.32 : 390,736.46 = 155,817.92 : x
  2. Step 2: Convert to fraction form
    283,142.32/390,736.46 = 155,817.92/x
  3. Step 3: Cross multiply
    283,142.32x = 390,736.46 × 155,817.92
  4. Step 4: Simplify right side
    283,142.32x = 60,883,742,465.36
  5. Step 5: Solve for x
    x = 60,883,742,465.36/283,142.32
  6. Step 6: Final answer
    x = 215,028.76

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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.