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Finding the Fourth Proportional to 245,808.75, 368,713.14 and 140,553.90

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Solution

The fourth proportional to 245,808.75, 368,713.14 and 140,553.90 is: 210,830.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,808.75 : 368,713.14 = 140,553.90 : x
  2. Step 2: Convert to fraction form
    245,808.75/368,713.14 = 140,553.90/x
  3. Step 3: Cross multiply
    245,808.75x = 368,713.14 × 140,553.90
  4. Step 4: Simplify right side
    245,808.75x = 51,824,069,808.25
  5. Step 5: Solve for x
    x = 51,824,069,808.25/245,808.75
  6. Step 6: Final answer
    x = 210,830.86

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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.