Home / 402,309.72-555,185.28-218,546.85

Finding the Fourth Proportional to 402,309.72, 555,185.28 and 218,546.85

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Solution

The fourth proportional to 402,309.72, 555,185.28 and 218,546.85 is: 301,593.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,309.72 : 555,185.28 = 218,546.85 : x
  2. Step 2: Convert to fraction form
    402,309.72/555,185.28 = 218,546.85/x
  3. Step 3: Cross multiply
    402,309.72x = 555,185.28 × 218,546.85
  4. Step 4: Simplify right side
    402,309.72x = 121,333,994,110.37
  5. Step 5: Solve for x
    x = 121,333,994,110.37/402,309.72
  6. Step 6: Final answer
    x = 301,593.49

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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.