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Finding the Fourth Proportional to 371,673.24, 512,865.54 and 218,677.79

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Solution

The fourth proportional to 371,673.24, 512,865.54 and 218,677.79 is: 301,749.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,673.24 : 512,865.54 = 218,677.79 : x
  2. Step 2: Convert to fraction form
    371,673.24/512,865.54 = 218,677.79/x
  3. Step 3: Cross multiply
    371,673.24x = 512,865.54 × 218,677.79
  4. Step 4: Simplify right side
    371,673.24x = 112,152,300,290.03
  5. Step 5: Solve for x
    x = 112,152,300,290.03/371,673.24
  6. Step 6: Final answer
    x = 301,749.73

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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.