Home / 289,138.03-399,191.60-185,814.13

Finding the Fourth Proportional to 289,138.03, 399,191.60 and 185,814.13

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Solution

The fourth proportional to 289,138.03, 399,191.60 and 185,814.13 is: 256,539.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,138.03 : 399,191.60 = 185,814.13 : x
  2. Step 2: Convert to fraction form
    289,138.03/399,191.60 = 185,814.13/x
  3. Step 3: Cross multiply
    289,138.03x = 399,191.60 × 185,814.13
  4. Step 4: Simplify right side
    289,138.03x = 74,175,439,857.31
  5. Step 5: Solve for x
    x = 74,175,439,857.31/289,138.03
  6. Step 6: Final answer
    x = 256,539.90

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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.