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Finding the Fourth Proportional to 287,863.04, 397,251.36 and 158,798.56

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Solution

The fourth proportional to 287,863.04, 397,251.36 and 158,798.56 is: 219,142.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,863.04 : 397,251.36 = 158,798.56 : x
  2. Step 2: Convert to fraction form
    287,863.04/397,251.36 = 158,798.56/x
  3. Step 3: Cross multiply
    287,863.04x = 397,251.36 × 158,798.56
  4. Step 4: Simplify right side
    287,863.04x = 63,082,943,926.04
  5. Step 5: Solve for x
    x = 63,082,943,926.04/287,863.04
  6. Step 6: Final answer
    x = 219,142.21

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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.