Home / 661,682.45-992,429.75-212,345.07

Finding the Fourth Proportional to 661,682.45, 992,429.75 and 212,345.07

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Solution

The fourth proportional to 661,682.45, 992,429.75 and 212,345.07 is: 318,487.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,682.45 : 992,429.75 = 212,345.07 : x
  2. Step 2: Convert to fraction form
    661,682.45/992,429.75 = 212,345.07/x
  3. Step 3: Cross multiply
    661,682.45x = 992,429.75 × 212,345.07
  4. Step 4: Simplify right side
    661,682.45x = 210,737,563,672.11
  5. Step 5: Solve for x
    x = 210,737,563,672.11/661,682.45
  6. Step 6: Final answer
    x = 318,487.46

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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.