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Finding the Fourth Proportional to 208,509.08, 287,743.04 and 113,015.68

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Solution

The fourth proportional to 208,509.08, 287,743.04 and 113,015.68 is: 155,961.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,509.08 : 287,743.04 = 113,015.68 : x
  2. Step 2: Convert to fraction form
    208,509.08/287,743.04 = 113,015.68/x
  3. Step 3: Cross multiply
    208,509.08x = 287,743.04 × 113,015.68
  4. Step 4: Simplify right side
    208,509.08x = 32,519,475,330.87
  5. Step 5: Solve for x
    x = 32,519,475,330.87/208,509.08
  6. Step 6: Final answer
    x = 155,961.91

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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.