Home / 405,199.92-559,177.65-221,442.21

Finding the Fourth Proportional to 405,199.92, 559,177.65 and 221,442.21

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Solution

The fourth proportional to 405,199.92, 559,177.65 and 221,442.21 is: 305,591.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,199.92 : 559,177.65 = 221,442.21 : x
  2. Step 2: Convert to fraction form
    405,199.92/559,177.65 = 221,442.21/x
  3. Step 3: Cross multiply
    405,199.92x = 559,177.65 × 221,442.21
  4. Step 4: Simplify right side
    405,199.92x = 123,825,534,598.61
  5. Step 5: Solve for x
    x = 123,825,534,598.61/405,199.92
  6. Step 6: Final answer
    x = 305,591.21

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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.