Home / 216,646,288.46-298,971,878.07-123,828,789.21

Finding the Fourth Proportional to 216,646,288.46, 298,971,878.07 and 123,828,789.21

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Solution

The fourth proportional to 216,646,288.46, 298,971,878.07 and 123,828,789.21 is: 170,883,729.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,646,288.46 : 298,971,878.07 = 123,828,789.21 : x
  2. Step 2: Convert to fraction form
    216,646,288.46/298,971,878.07 = 123,828,789.21/x
  3. Step 3: Cross multiply
    216,646,288.46x = 298,971,878.07 × 123,828,789.21
  4. Step 4: Simplify right side
    216,646,288.46x = 37,021,325,670,271,288
  5. Step 5: Solve for x
    x = 37,021,325,670,271,288/216,646,288.46
  6. Step 6: Final answer
    x = 170,883,729.11

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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.