Home / 405,339.24-559,370.40-221,578.10

Finding the Fourth Proportional to 405,339.24, 559,370.40 and 221,578.10

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Solution

The fourth proportional to 405,339.24, 559,370.40 and 221,578.10 is: 305,779.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,339.24 : 559,370.40 = 221,578.10 : x
  2. Step 2: Convert to fraction form
    405,339.24/559,370.40 = 221,578.10/x
  3. Step 3: Cross multiply
    405,339.24x = 559,370.40 × 221,578.10
  4. Step 4: Simplify right side
    405,339.24x = 123,944,230,428.24
  5. Step 5: Solve for x
    x = 123,944,230,428.24/405,339.24
  6. Step 6: Final answer
    x = 305,779.01

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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.