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Finding the Fourth Proportional to 402,759.79, 555,799.45 and 218,994.37

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Solution

The fourth proportional to 402,759.79, 555,799.45 and 218,994.37 is: 302,207.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,759.79 : 555,799.45 = 218,994.37 : x
  2. Step 2: Convert to fraction form
    402,759.79/555,799.45 = 218,994.37/x
  3. Step 3: Cross multiply
    402,759.79x = 555,799.45 × 218,994.37
  4. Step 4: Simplify right side
    402,759.79x = 121,716,950,399.10
  5. Step 5: Solve for x
    x = 121,716,950,399.10/402,759.79
  6. Step 6: Final answer
    x = 302,207.30

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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.