Home / 405,449.96-559,503.38-221,685.16

Finding the Fourth Proportional to 405,449.96, 559,503.38 and 221,685.16

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Solution

The fourth proportional to 405,449.96, 559,503.38 and 221,685.16 is: 305,915.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,449.96 : 559,503.38 = 221,685.16 : x
  2. Step 2: Convert to fraction form
    405,449.96/559,503.38 = 221,685.16/x
  3. Step 3: Cross multiply
    405,449.96x = 559,503.38 × 221,685.16
  4. Step 4: Simplify right side
    405,449.96x = 124,033,596,315.84
  5. Step 5: Solve for x
    x = 124,033,596,315.84/405,449.96
  6. Step 6: Final answer
    x = 305,915.92

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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.