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Finding the Fourth Proportional to 495,393.90, 683,651.52 and 269,039.40

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Solution

The fourth proportional to 495,393.90, 683,651.52 and 269,039.40 is: 371,278.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,393.90 : 683,651.52 = 269,039.40 : x
  2. Step 2: Convert to fraction form
    495,393.90/683,651.52 = 269,039.40/x
  3. Step 3: Cross multiply
    495,393.90x = 683,651.52 × 269,039.40
  4. Step 4: Simplify right side
    495,393.90x = 183,929,194,749.89
  5. Step 5: Solve for x
    x = 183,929,194,749.89/495,393.90
  6. Step 6: Final answer
    x = 371,278.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.