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Finding the Fourth Proportional to 210,063.28, 289,787.28 and 142,104.04

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Solution

The fourth proportional to 210,063.28, 289,787.28 and 142,104.04 is: 196,035.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,063.28 : 289,787.28 = 142,104.04 : x
  2. Step 2: Convert to fraction form
    210,063.28/289,787.28 = 142,104.04/x
  3. Step 3: Cross multiply
    210,063.28x = 289,787.28 × 142,104.04
  4. Step 4: Simplify right side
    210,063.28x = 41,179,943,228.61
  5. Step 5: Solve for x
    x = 41,179,943,228.61/210,063.28
  6. Step 6: Final answer
    x = 196,035.90

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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.