Home / 208,512.12-287,518.50-154,896.60

Finding the Fourth Proportional to 208,512.12, 287,518.50 and 154,896.60

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Solution

The fourth proportional to 208,512.12, 287,518.50 and 154,896.60 is: 213,587.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,512.12 : 287,518.50 = 154,896.60 : x
  2. Step 2: Convert to fraction form
    208,512.12/287,518.50 = 154,896.60/x
  3. Step 3: Cross multiply
    208,512.12x = 287,518.50 × 154,896.60
  4. Step 4: Simplify right side
    208,512.12x = 44,535,638,087.10
  5. Step 5: Solve for x
    x = 44,535,638,087.10/208,512.12
  6. Step 6: Final answer
    x = 213,587.77

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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.