Home / 280,350.10-386,710.77-199,803.70

Finding the Fourth Proportional to 280,350.10, 386,710.77 and 199,803.70

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Solution

The fourth proportional to 280,350.10, 386,710.77 and 199,803.70 is: 275,606.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,350.10 : 386,710.77 = 199,803.70 : x
  2. Step 2: Convert to fraction form
    280,350.10/386,710.77 = 199,803.70/x
  3. Step 3: Cross multiply
    280,350.10x = 386,710.77 × 199,803.70
  4. Step 4: Simplify right side
    280,350.10x = 77,266,242,675.85
  5. Step 5: Solve for x
    x = 77,266,242,675.85/280,350.10
  6. Step 6: Final answer
    x = 275,606.26

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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.