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Finding the Fourth Proportional to 402,758.79, 555,798.07 and 218,993.37

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Solution

The fourth proportional to 402,758.79, 555,798.07 and 218,993.37 is: 302,205.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,758.79 : 555,798.07 = 218,993.37 : x
  2. Step 2: Convert to fraction form
    402,758.79/555,798.07 = 218,993.37/x
  3. Step 3: Cross multiply
    402,758.79x = 555,798.07 × 218,993.37
  4. Step 4: Simplify right side
    402,758.79x = 121,716,092,388.80
  5. Step 5: Solve for x
    x = 121,716,092,388.80/402,758.79
  6. Step 6: Final answer
    x = 302,205.92

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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.