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Finding the Fourth Proportional to 458,144.55, 688,693.05 and 325,940.40

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Solution

The fourth proportional to 458,144.55, 688,693.05 and 325,940.40 is: 489,960.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,144.55 : 688,693.05 = 325,940.40 : x
  2. Step 2: Convert to fraction form
    458,144.55/688,693.05 = 325,940.40/x
  3. Step 3: Cross multiply
    458,144.55x = 688,693.05 × 325,940.40
  4. Step 4: Simplify right side
    458,144.55x = 224,472,888,194.22
  5. Step 5: Solve for x
    x = 224,472,888,194.22/458,144.55
  6. Step 6: Final answer
    x = 489,960.84

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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.