Home / 257,784.14-386,626.11-129,666.30

Finding the Fourth Proportional to 257,784.14, 386,626.11 and 129,666.30

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Solution

The fourth proportional to 257,784.14, 386,626.11 and 129,666.30 is: 194,474.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,784.14 : 386,626.11 = 129,666.30 : x
  2. Step 2: Convert to fraction form
    257,784.14/386,626.11 = 129,666.30/x
  3. Step 3: Cross multiply
    257,784.14x = 386,626.11 × 129,666.30
  4. Step 4: Simplify right side
    257,784.14x = 50,132,377,167.09
  5. Step 5: Solve for x
    x = 50,132,377,167.09/257,784.14
  6. Step 6: Final answer
    x = 194,474.25

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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.