Home / 405,120.20-559,088.30-223,828.25

Finding the Fourth Proportional to 405,120.20, 559,088.30 and 223,828.25

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Solution

The fourth proportional to 405,120.20, 559,088.30 and 223,828.25 is: 308,895.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,120.20 : 559,088.30 = 223,828.25 : x
  2. Step 2: Convert to fraction form
    405,120.20/559,088.30 = 223,828.25/x
  3. Step 3: Cross multiply
    405,120.20x = 559,088.30 × 223,828.25
  4. Step 4: Simplify right side
    405,120.20x = 125,139,751,869.89
  5. Step 5: Solve for x
    x = 125,139,751,869.89/405,120.20
  6. Step 6: Final answer
    x = 308,895.37

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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.