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Finding the Fourth Proportional to 354,585.50, 489,329.18 and 193,443.95

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Solution

The fourth proportional to 354,585.50, 489,329.18 and 193,443.95 is: 266,953.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,585.50 : 489,329.18 = 193,443.95 : x
  2. Step 2: Convert to fraction form
    354,585.50/489,329.18 = 193,443.95/x
  3. Step 3: Cross multiply
    354,585.50x = 489,329.18 × 193,443.95
  4. Step 4: Simplify right side
    354,585.50x = 94,657,769,429.46
  5. Step 5: Solve for x
    x = 94,657,769,429.46/354,585.50
  6. Step 6: Final answer
    x = 266,953.30

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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.