Home / 661,753.08-992,145.69-212,218.07

Finding the Fourth Proportional to 661,753.08, 992,145.69 and 212,218.07

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Solution

The fourth proportional to 661,753.08, 992,145.69 and 212,218.07 is: 318,171.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,753.08 : 992,145.69 = 212,218.07 : x
  2. Step 2: Convert to fraction form
    661,753.08/992,145.69 = 212,218.07/x
  3. Step 3: Cross multiply
    661,753.08x = 992,145.69 × 212,218.07
  4. Step 4: Simplify right side
    661,753.08x = 210,551,238,529.89
  5. Step 5: Solve for x
    x = 210,551,238,529.89/661,753.08
  6. Step 6: Final answer
    x = 318,171.91

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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.