Home / 278,723.96-384,646.22-151,406.84

Finding the Fourth Proportional to 278,723.96, 384,646.22 and 151,406.84

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Solution

The fourth proportional to 278,723.96, 384,646.22 and 151,406.84 is: 208,945.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,723.96 : 384,646.22 = 151,406.84 : x
  2. Step 2: Convert to fraction form
    278,723.96/384,646.22 = 151,406.84/x
  3. Step 3: Cross multiply
    278,723.96x = 384,646.22 × 151,406.84
  4. Step 4: Simplify right side
    278,723.96x = 58,238,068,688.14
  5. Step 5: Solve for x
    x = 58,238,068,688.14/278,723.96
  6. Step 6: Final answer
    x = 208,945.33

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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.