Home / 290,132.64-400,280.40-189,588.96

Finding the Fourth Proportional to 290,132.64, 400,280.40 and 189,588.96

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Solution

The fourth proportional to 290,132.64, 400,280.40 and 189,588.96 is: 261,565.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,132.64 : 400,280.40 = 189,588.96 : x
  2. Step 2: Convert to fraction form
    290,132.64/400,280.40 = 189,588.96/x
  3. Step 3: Cross multiply
    290,132.64x = 400,280.40 × 189,588.96
  4. Step 4: Simplify right side
    290,132.64x = 75,888,744,744.38
  5. Step 5: Solve for x
    x = 75,888,744,744.38/290,132.64
  6. Step 6: Final answer
    x = 261,565.69

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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.