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Finding the Fourth Proportional to 245,855.70, 368,783.55 and 171,206.10

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Solution

The fourth proportional to 245,855.70, 368,783.55 and 171,206.10 is: 256,809.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,855.70 : 368,783.55 = 171,206.10 : x
  2. Step 2: Convert to fraction form
    245,855.70/368,783.55 = 171,206.10/x
  3. Step 3: Cross multiply
    245,855.70x = 368,783.55 × 171,206.10
  4. Step 4: Simplify right side
    245,855.70x = 63,137,993,339.66
  5. Step 5: Solve for x
    x = 63,137,993,339.66/245,855.70
  6. Step 6: Final answer
    x = 256,809.15

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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.