Home / 405,320.30-559,344.24-221,559.15

Finding the Fourth Proportional to 405,320.30, 559,344.24 and 221,559.15

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Solution

The fourth proportional to 405,320.30, 559,344.24 and 221,559.15 is: 305,752.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,320.30 : 559,344.24 = 221,559.15 : x
  2. Step 2: Convert to fraction form
    405,320.30/559,344.24 = 221,559.15/x
  3. Step 3: Cross multiply
    405,320.30x = 559,344.24 × 221,559.15
  4. Step 4: Simplify right side
    405,320.30x = 123,927,831,575.08
  5. Step 5: Solve for x
    x = 123,927,831,575.08/405,320.30
  6. Step 6: Final answer
    x = 305,752.84

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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.