Home / 388,219.08-535,754.25-211,421.39

Finding the Fourth Proportional to 388,219.08, 535,754.25 and 211,421.39

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Solution

The fourth proportional to 388,219.08, 535,754.25 and 211,421.39 is: 291,768.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,219.08 : 535,754.25 = 211,421.39 : x
  2. Step 2: Convert to fraction form
    388,219.08/535,754.25 = 211,421.39/x
  3. Step 3: Cross multiply
    388,219.08x = 535,754.25 × 211,421.39
  4. Step 4: Simplify right side
    388,219.08x = 113,269,908,568.25
  5. Step 5: Solve for x
    x = 113,269,908,568.25/388,219.08
  6. Step 6: Final answer
    x = 291,768.01

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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.