Home / 384,899.41-531,139.73-212,807.42

Finding the Fourth Proportional to 384,899.41, 531,139.73 and 212,807.42

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Solution

The fourth proportional to 384,899.41, 531,139.73 and 212,807.42 is: 293,662.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,899.41 : 531,139.73 = 212,807.42 : x
  2. Step 2: Convert to fraction form
    384,899.41/531,139.73 = 212,807.42/x
  3. Step 3: Cross multiply
    384,899.41x = 531,139.73 × 212,807.42
  4. Step 4: Simplify right side
    384,899.41x = 113,030,475,600.80
  5. Step 5: Solve for x
    x = 113,030,475,600.80/384,899.41
  6. Step 6: Final answer
    x = 293,662.38

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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.