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Finding the Fourth Proportional to 340,939.80, 511,409.70 and 193,483.80

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Solution

The fourth proportional to 340,939.80, 511,409.70 and 193,483.80 is: 290,225.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,939.80 : 511,409.70 = 193,483.80 : x
  2. Step 2: Convert to fraction form
    340,939.80/511,409.70 = 193,483.80/x
  3. Step 3: Cross multiply
    340,939.80x = 511,409.70 × 193,483.80
  4. Step 4: Simplify right side
    340,939.80x = 98,949,492,112.86
  5. Step 5: Solve for x
    x = 98,949,492,112.86/340,939.80
  6. Step 6: Final answer
    x = 290,225.70

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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.