Home / 223,421.61-308,321.19-121,447.05

Finding the Fourth Proportional to 223,421.61, 308,321.19 and 121,447.05

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Solution

The fourth proportional to 223,421.61, 308,321.19 and 121,447.05 is: 167,596.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,421.61 : 308,321.19 = 121,447.05 : x
  2. Step 2: Convert to fraction form
    223,421.61/308,321.19 = 121,447.05/x
  3. Step 3: Cross multiply
    223,421.61x = 308,321.19 × 121,447.05
  4. Step 4: Simplify right side
    223,421.61x = 37,444,698,977.99
  5. Step 5: Solve for x
    x = 37,444,698,977.99/223,421.61
  6. Step 6: Final answer
    x = 167,596.59

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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.