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Finding the Fourth Proportional to 354,619.29, 489,373.93 and 193,474.45

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Solution

The fourth proportional to 354,619.29, 489,373.93 and 193,474.45 is: 266,994.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,619.29 : 489,373.93 = 193,474.45 : x
  2. Step 2: Convert to fraction form
    354,619.29/489,373.93 = 193,474.45/x
  3. Step 3: Cross multiply
    354,619.29x = 489,373.93 × 193,474.45
  4. Step 4: Simplify right side
    354,619.29x = 94,681,348,536.85
  5. Step 5: Solve for x
    x = 94,681,348,536.85/354,619.29
  6. Step 6: Final answer
    x = 266,994.35

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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.