Home / 345,799.94-518,678.94-129,616.05

Finding the Fourth Proportional to 345,799.94, 518,678.94 and 129,616.05

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Solution

The fourth proportional to 345,799.94, 518,678.94 and 129,616.05 is: 194,416.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,799.94 : 518,678.94 = 129,616.05 : x
  2. Step 2: Convert to fraction form
    345,799.94/518,678.94 = 129,616.05/x
  3. Step 3: Cross multiply
    345,799.94x = 518,678.94 × 129,616.05
  4. Step 4: Simplify right side
    345,799.94x = 67,229,114,934.52
  5. Step 5: Solve for x
    x = 67,229,114,934.52/345,799.94
  6. Step 6: Final answer
    x = 194,416.22

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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.