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Finding the Fourth Proportional to 421,359.74, 632,036.56 and 168,698.56

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Solution

The fourth proportional to 421,359.74, 632,036.56 and 168,698.56 is: 253,046.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,359.74 : 632,036.56 = 168,698.56 : x
  2. Step 2: Convert to fraction form
    421,359.74/632,036.56 = 168,698.56/x
  3. Step 3: Cross multiply
    421,359.74x = 632,036.56 × 168,698.56
  4. Step 4: Simplify right side
    421,359.74x = 106,623,657,539.35
  5. Step 5: Solve for x
    x = 106,623,657,539.35/421,359.74
  6. Step 6: Final answer
    x = 253,046.62

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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.