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Finding the Fourth Proportional to 287,491.95, 396,738.75 and 166,703.52

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Solution

The fourth proportional to 287,491.95, 396,738.75 and 166,703.52 is: 230,050.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,491.95 : 396,738.75 = 166,703.52 : x
  2. Step 2: Convert to fraction form
    287,491.95/396,738.75 = 166,703.52/x
  3. Step 3: Cross multiply
    287,491.95x = 396,738.75 × 166,703.52
  4. Step 4: Simplify right side
    287,491.95x = 66,137,746,145.40
  5. Step 5: Solve for x
    x = 66,137,746,145.40/287,491.95
  6. Step 6: Final answer
    x = 230,050.78

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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.