Home / 384,584.10-530,715.69-210,147.36

Finding the Fourth Proportional to 384,584.10, 530,715.69 and 210,147.36

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Solution

The fourth proportional to 384,584.10, 530,715.69 and 210,147.36 is: 289,997.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,584.10 : 530,715.69 = 210,147.36 : x
  2. Step 2: Convert to fraction form
    384,584.10/530,715.69 = 210,147.36/x
  3. Step 3: Cross multiply
    384,584.10x = 530,715.69 × 210,147.36
  4. Step 4: Simplify right side
    384,584.10x = 111,528,501,164.08
  5. Step 5: Solve for x
    x = 111,528,501,164.08/384,584.10
  6. Step 6: Final answer
    x = 289,997.69

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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.