Home / 282,607.28-390,019.60-161,786.32

Finding the Fourth Proportional to 282,607.28, 390,019.60 and 161,786.32

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Solution

The fourth proportional to 282,607.28, 390,019.60 and 161,786.32 is: 223,277.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,607.28 : 390,019.60 = 161,786.32 : x
  2. Step 2: Convert to fraction form
    282,607.28/390,019.60 = 161,786.32/x
  3. Step 3: Cross multiply
    282,607.28x = 390,019.60 × 161,786.32
  4. Step 4: Simplify right side
    282,607.28x = 63,099,835,811.87
  5. Step 5: Solve for x
    x = 63,099,835,811.87/282,607.28
  6. Step 6: Final answer
    x = 223,277.46

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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.