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Finding the Fourth Proportional to 245,820.80, 368,293.80 and 210,828.80

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Solution

The fourth proportional to 245,820.80, 368,293.80 and 210,828.80 is: 315,868.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,820.80 : 368,293.80 = 210,828.80 : x
  2. Step 2: Convert to fraction form
    245,820.80/368,293.80 = 210,828.80/x
  3. Step 3: Cross multiply
    245,820.80x = 368,293.80 × 210,828.80
  4. Step 4: Simplify right side
    245,820.80x = 77,646,939,901.44
  5. Step 5: Solve for x
    x = 77,646,939,901.44/245,820.80
  6. Step 6: Final answer
    x = 315,868.06

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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.