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Finding the Fourth Proportional to 289,702.80, 434,554.20 and 245,525.40

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Solution

The fourth proportional to 289,702.80, 434,554.20 and 245,525.40 is: 368,288.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,702.80 : 434,554.20 = 245,525.40 : x
  2. Step 2: Convert to fraction form
    289,702.80/434,554.20 = 245,525.40/x
  3. Step 3: Cross multiply
    289,702.80x = 434,554.20 × 245,525.40
  4. Step 4: Simplify right side
    289,702.80x = 106,694,093,776.68
  5. Step 5: Solve for x
    x = 106,694,093,776.68/289,702.80
  6. Step 6: Final answer
    x = 368,288.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.