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Finding the Fourth Proportional to 339,368.80, 508,718.40 and 189,680.80

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Solution

The fourth proportional to 339,368.80, 508,718.40 and 189,680.80 is: 284,334.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,368.80 : 508,718.40 = 189,680.80 : x
  2. Step 2: Convert to fraction form
    339,368.80/508,718.40 = 189,680.80/x
  3. Step 3: Cross multiply
    339,368.80x = 508,718.40 × 189,680.80
  4. Step 4: Simplify right side
    339,368.80x = 96,494,113,086.72
  5. Step 5: Solve for x
    x = 96,494,113,086.72/339,368.80
  6. Step 6: Final answer
    x = 284,334.07

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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.