Home / 386,378.29-579,158.39-129,966.77

Finding the Fourth Proportional to 386,378.29, 579,158.39 and 129,966.77

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Solution

The fourth proportional to 386,378.29, 579,158.39 and 129,966.77 is: 194,812.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,378.29 : 579,158.39 = 129,966.77 : x
  2. Step 2: Convert to fraction form
    386,378.29/579,158.39 = 129,966.77/x
  3. Step 3: Cross multiply
    386,378.29x = 579,158.39 × 129,966.77
  4. Step 4: Simplify right side
    386,378.29x = 75,271,345,266.70
  5. Step 5: Solve for x
    x = 75,271,345,266.70/386,378.29
  6. Step 6: Final answer
    x = 194,812.56

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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.