Home / 405,311.53-559,332.11-221,550.35

Finding the Fourth Proportional to 405,311.53, 559,332.11 and 221,550.35

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Solution

The fourth proportional to 405,311.53, 559,332.11 and 221,550.35 is: 305,740.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,311.53 : 559,332.11 = 221,550.35 : x
  2. Step 2: Convert to fraction form
    405,311.53/559,332.11 = 221,550.35/x
  3. Step 3: Cross multiply
    405,311.53x = 559,332.11 × 221,550.35
  4. Step 4: Simplify right side
    405,311.53x = 123,920,224,736.74
  5. Step 5: Solve for x
    x = 123,920,224,736.74/405,311.53
  6. Step 6: Final answer
    x = 305,740.68

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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.