Home / 405,317.78-559,328.81-221,548.14

Finding the Fourth Proportional to 405,317.78, 559,328.81 and 221,548.14

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Solution

The fourth proportional to 405,317.78, 559,328.81 and 221,548.14 is: 305,731.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,317.78 : 559,328.81 = 221,548.14 : x
  2. Step 2: Convert to fraction form
    405,317.78/559,328.81 = 221,548.14/x
  3. Step 3: Cross multiply
    405,317.78x = 559,328.81 × 221,548.14
  4. Step 4: Simplify right side
    405,317.78x = 123,918,256,396.17
  5. Step 5: Solve for x
    x = 123,918,256,396.17/405,317.78
  6. Step 6: Final answer
    x = 305,731.12

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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.