Home / 218,998.07-328,071.03-143,890.01

Finding the Fourth Proportional to 218,998.07, 328,071.03 and 143,890.01

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Solution

The fourth proportional to 218,998.07, 328,071.03 and 143,890.01 is: 215,555.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,998.07 : 328,071.03 = 143,890.01 : x
  2. Step 2: Convert to fraction form
    218,998.07/328,071.03 = 143,890.01/x
  3. Step 3: Cross multiply
    218,998.07x = 328,071.03 × 143,890.01
  4. Step 4: Simplify right side
    218,998.07x = 47,206,142,147.06
  5. Step 5: Solve for x
    x = 47,206,142,147.06/218,998.07
  6. Step 6: Final answer
    x = 215,555.07

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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.