Home / 388,969.56-536,777.19-210,121.56

Finding the Fourth Proportional to 388,969.56, 536,777.19 and 210,121.56

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Solution

The fourth proportional to 388,969.56, 536,777.19 and 210,121.56 is: 289,967.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,969.56 : 536,777.19 = 210,121.56 : x
  2. Step 2: Convert to fraction form
    388,969.56/536,777.19 = 210,121.56/x
  3. Step 3: Cross multiply
    388,969.56x = 536,777.19 × 210,121.56
  4. Step 4: Simplify right side
    388,969.56x = 112,788,460,535.22
  5. Step 5: Solve for x
    x = 112,788,460,535.22/388,969.56
  6. Step 6: Final answer
    x = 289,967.32

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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.