Home / 405,246.89-559,242.46-221,489.18

Finding the Fourth Proportional to 405,246.89, 559,242.46 and 221,489.18

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Solution

The fourth proportional to 405,246.89, 559,242.46 and 221,489.18 is: 305,656.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,246.89 : 559,242.46 = 221,489.18 : x
  2. Step 2: Convert to fraction form
    405,246.89/559,242.46 = 221,489.18/x
  3. Step 3: Cross multiply
    405,246.89x = 559,242.46 × 221,489.18
  4. Step 4: Simplify right side
    405,246.89x = 123,866,153,886.58
  5. Step 5: Solve for x
    x = 123,866,153,886.58/405,246.89
  6. Step 6: Final answer
    x = 305,656.03

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1.5x scale

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.