Home / 405,122.76-559,054.32-223,830.81

Finding the Fourth Proportional to 405,122.76, 559,054.32 and 223,830.81

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Solution

The fourth proportional to 405,122.76, 559,054.32 and 223,830.81 is: 308,878.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,122.76 : 559,054.32 = 223,830.81 : x
  2. Step 2: Convert to fraction form
    405,122.76/559,054.32 = 223,830.81/x
  3. Step 3: Cross multiply
    405,122.76x = 559,054.32 × 223,830.81
  4. Step 4: Simplify right side
    405,122.76x = 125,133,581,279.60
  5. Step 5: Solve for x
    x = 125,133,581,279.60/405,122.76
  6. Step 6: Final answer
    x = 308,878.18

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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.