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Finding the Fourth Proportional to 245,653.68, 367,890 and 140,152.80

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Solution

The fourth proportional to 245,653.68, 367,890 and 140,152.80 is: 209,892.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,653.68 : 367,890 = 140,152.80 : x
  2. Step 2: Convert to fraction form
    245,653.68/367,890 = 140,152.80/x
  3. Step 3: Cross multiply
    245,653.68x = 367,890 × 140,152.80
  4. Step 4: Simplify right side
    245,653.68x = 51,560,813,592.00
  5. Step 5: Solve for x
    x = 51,560,813,592.00/245,653.68
  6. Step 6: Final answer
    x = 209,892.29

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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.