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Finding the Fourth Proportional to 349,980, 482,972.40 and 191,004

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Solution

The fourth proportional to 349,980, 482,972.40 and 191,004 is: 263,585.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,980 : 482,972.40 = 191,004 : x
  2. Step 2: Convert to fraction form
    349,980/482,972.40 = 191,004/x
  3. Step 3: Cross multiply
    349,980x = 482,972.40 × 191,004
  4. Step 4: Simplify right side
    349,980x = 92,249,660,289.60
  5. Step 5: Solve for x
    x = 92,249,660,289.60/349,980
  6. Step 6: Final answer
    x = 263,585.52

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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.