Home / 208,213.57-287,334.83-112,720.27

Finding the Fourth Proportional to 208,213.57, 287,334.83 and 112,720.27

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Solution

The fourth proportional to 208,213.57, 287,334.83 and 112,720.27 is: 155,554.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,213.57 : 287,334.83 = 112,720.27 : x
  2. Step 2: Convert to fraction form
    208,213.57/287,334.83 = 112,720.27/x
  3. Step 3: Cross multiply
    208,213.57x = 287,334.83 × 112,720.27
  4. Step 4: Simplify right side
    208,213.57x = 32,388,459,618.00
  5. Step 5: Solve for x
    x = 32,388,459,618.00/208,213.57
  6. Step 6: Final answer
    x = 155,554.03

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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.