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Finding the Fourth Proportional to 354,505.59, 489,223.49 and 193,360.61

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Solution

The fourth proportional to 354,505.59, 489,223.49 and 193,360.61 is: 266,840.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,505.59 : 489,223.49 = 193,360.61 : x
  2. Step 2: Convert to fraction form
    354,505.59/489,223.49 = 193,360.61/x
  3. Step 3: Cross multiply
    354,505.59x = 489,223.49 × 193,360.61
  4. Step 4: Simplify right side
    354,505.59x = 94,596,549,039.81
  5. Step 5: Solve for x
    x = 94,596,549,039.81/354,505.59
  6. Step 6: Final answer
    x = 266,840.78

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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.