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Finding the Fourth Proportional to 343,442.20, 514,923.30 and 203,128.60

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Solution

The fourth proportional to 343,442.20, 514,923.30 and 203,128.60 is: 304,550.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,442.20 : 514,923.30 = 203,128.60 : x
  2. Step 2: Convert to fraction form
    343,442.20/514,923.30 = 203,128.60/x
  3. Step 3: Cross multiply
    343,442.20x = 514,923.30 × 203,128.60
  4. Step 4: Simplify right side
    343,442.20x = 104,595,649,036.38
  5. Step 5: Solve for x
    x = 104,595,649,036.38/343,442.20
  6. Step 6: Final answer
    x = 304,550.95

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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.