Home / 405,444.11-559,514.25-221,686.29

Finding the Fourth Proportional to 405,444.11, 559,514.25 and 221,686.29

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Solution

The fourth proportional to 405,444.11, 559,514.25 and 221,686.29 is: 305,927.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,444.11 : 559,514.25 = 221,686.29 : x
  2. Step 2: Convert to fraction form
    405,444.11/559,514.25 = 221,686.29/x
  3. Step 3: Cross multiply
    405,444.11x = 559,514.25 × 221,686.29
  4. Step 4: Simplify right side
    405,444.11x = 124,036,638,284.63
  5. Step 5: Solve for x
    x = 124,036,638,284.63/405,444.11
  6. Step 6: Final answer
    x = 305,927.84

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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.