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Finding the Fourth Proportional to 208,050.97, 287,112.42 and 112,559.72

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Solution

The fourth proportional to 208,050.97, 287,112.42 and 112,559.72 is: 155,333.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,050.97 : 287,112.42 = 112,559.72 : x
  2. Step 2: Convert to fraction form
    208,050.97/287,112.42 = 112,559.72/x
  3. Step 3: Cross multiply
    208,050.97x = 287,112.42 × 112,559.72
  4. Step 4: Simplify right side
    208,050.97x = 32,317,291,605.36
  5. Step 5: Solve for x
    x = 32,317,291,605.36/208,050.97
  6. Step 6: Final answer
    x = 155,333.53

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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.