Home / 402,788.08-555,835.80-221,499.82

Finding the Fourth Proportional to 402,788.08, 555,835.80 and 221,499.82

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Solution

The fourth proportional to 402,788.08, 555,835.80 and 221,499.82 is: 305,663.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,788.08 : 555,835.80 = 221,499.82 : x
  2. Step 2: Convert to fraction form
    402,788.08/555,835.80 = 221,499.82/x
  3. Step 3: Cross multiply
    402,788.08x = 555,835.80 × 221,499.82
  4. Step 4: Simplify right side
    402,788.08x = 123,117,529,649.56
  5. Step 5: Solve for x
    x = 123,117,529,649.56/402,788.08
  6. Step 6: Final answer
    x = 305,663.29

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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.