Home / 208,431.80-287,634.66-117,817.10

Finding the Fourth Proportional to 208,431.80, 287,634.66 and 117,817.10

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Solution

The fourth proportional to 208,431.80, 287,634.66 and 117,817.10 is: 162,586.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,431.80 : 287,634.66 = 117,817.10 : x
  2. Step 2: Convert to fraction form
    208,431.80/287,634.66 = 117,817.10/x
  3. Step 3: Cross multiply
    208,431.80x = 287,634.66 × 117,817.10
  4. Step 4: Simplify right side
    208,431.80x = 33,888,281,500.69
  5. Step 5: Solve for x
    x = 33,888,281,500.69/208,431.80
  6. Step 6: Final answer
    x = 162,586.91

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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.