Home / 405,120.18-559,037.75-223,830.64

Finding the Fourth Proportional to 405,120.18, 559,037.75 and 223,830.64

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Solution

The fourth proportional to 405,120.18, 559,037.75 and 223,830.64 is: 308,870.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,120.18 : 559,037.75 = 223,830.64 : x
  2. Step 2: Convert to fraction form
    405,120.18/559,037.75 = 223,830.64/x
  3. Step 3: Cross multiply
    405,120.18x = 559,037.75 × 223,830.64
  4. Step 4: Simplify right side
    405,120.18x = 125,129,778,205.35
  5. Step 5: Solve for x
    x = 125,129,778,205.35/405,120.18
  6. Step 6: Final answer
    x = 308,870.76

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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.