Home / 259,136.21-357,485.78-151,640.30

Finding the Fourth Proportional to 259,136.21, 357,485.78 and 151,640.30

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Solution

The fourth proportional to 259,136.21, 357,485.78 and 151,640.30 is: 209,192.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,136.21 : 357,485.78 = 151,640.30 : x
  2. Step 2: Convert to fraction form
    259,136.21/357,485.78 = 151,640.30/x
  3. Step 3: Cross multiply
    259,136.21x = 357,485.78 × 151,640.30
  4. Step 4: Simplify right side
    259,136.21x = 54,209,249,516.61
  5. Step 5: Solve for x
    x = 54,209,249,516.61/259,136.21
  6. Step 6: Final answer
    x = 209,192.11

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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.