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Finding the Fourth Proportional to 219,988.58, 303,588.55 and 143,556.57

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Solution

The fourth proportional to 219,988.58, 303,588.55 and 143,556.57 is: 198,110.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,988.58 : 303,588.55 = 143,556.57 : x
  2. Step 2: Convert to fraction form
    219,988.58/303,588.55 = 143,556.57/x
  3. Step 3: Cross multiply
    219,988.58x = 303,588.55 × 143,556.57
  4. Step 4: Simplify right side
    219,988.58x = 43,582,130,570.38
  5. Step 5: Solve for x
    x = 43,582,130,570.38/219,988.58
  6. Step 6: Final answer
    x = 198,110.88

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1.5x scale

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.