Home / 260,631.26-390,434.31-171,614.89

Finding the Fourth Proportional to 260,631.26, 390,434.31 and 171,614.89

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Solution

The fourth proportional to 260,631.26, 390,434.31 and 171,614.89 is: 257,084.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,631.26 : 390,434.31 = 171,614.89 : x
  2. Step 2: Convert to fraction form
    260,631.26/390,434.31 = 171,614.89/x
  3. Step 3: Cross multiply
    260,631.26x = 390,434.31 × 171,614.89
  4. Step 4: Simplify right side
    260,631.26x = 67,004,341,162.88
  5. Step 5: Solve for x
    x = 67,004,341,162.88/260,631.26
  6. Step 6: Final answer
    x = 257,084.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.