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Finding the Fourth Proportional to 404,639.80, 606,959.70 and 194,687.80

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Solution

The fourth proportional to 404,639.80, 606,959.70 and 194,687.80 is: 292,031.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,639.80 : 606,959.70 = 194,687.80 : x
  2. Step 2: Convert to fraction form
    404,639.80/606,959.70 = 194,687.80/x
  3. Step 3: Cross multiply
    404,639.80x = 606,959.70 × 194,687.80
  4. Step 4: Simplify right side
    404,639.80x = 118,167,648,681.66
  5. Step 5: Solve for x
    x = 118,167,648,681.66/404,639.80
  6. Step 6: Final answer
    x = 292,031.70

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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.