Home / 405,237.12-559,238.40-223,960.80

Finding the Fourth Proportional to 405,237.12, 559,238.40 and 223,960.80

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Solution

The fourth proportional to 405,237.12, 559,238.40 and 223,960.80 is: 309,072.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,237.12 : 559,238.40 = 223,960.80 : x
  2. Step 2: Convert to fraction form
    405,237.12/559,238.40 = 223,960.80/x
  3. Step 3: Cross multiply
    405,237.12x = 559,238.40 × 223,960.80
  4. Step 4: Simplify right side
    405,237.12x = 125,247,479,454.72
  5. Step 5: Solve for x
    x = 125,247,479,454.72/405,237.12
  6. Step 6: Final answer
    x = 309,072.08

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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.