Home / 661,639.43-992,588.37-212,325.75

Finding the Fourth Proportional to 661,639.43, 992,588.37 and 212,325.75

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Solution

The fourth proportional to 661,639.43, 992,588.37 and 212,325.75 is: 318,530.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,639.43 : 992,588.37 = 212,325.75 : x
  2. Step 2: Convert to fraction form
    661,639.43/992,588.37 = 212,325.75/x
  3. Step 3: Cross multiply
    661,639.43x = 992,588.37 × 212,325.75
  4. Step 4: Simplify right side
    661,639.43x = 210,752,070,101.53
  5. Step 5: Solve for x
    x = 210,752,070,101.53/661,639.43
  6. Step 6: Final answer
    x = 318,530.10

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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.