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Finding the Fourth Proportional to 461,283.36, 691,920.91 and 145,740.25

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Solution

The fourth proportional to 461,283.36, 691,920.91 and 145,740.25 is: 218,609.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,283.36 : 691,920.91 = 145,740.25 : x
  2. Step 2: Convert to fraction form
    461,283.36/691,920.91 = 145,740.25/x
  3. Step 3: Cross multiply
    461,283.36x = 691,920.91 × 145,740.25
  4. Step 4: Simplify right side
    461,283.36x = 100,840,726,403.63
  5. Step 5: Solve for x
    x = 100,840,726,403.63/461,283.36
  6. Step 6: Final answer
    x = 218,609.07

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Similar ratio
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1.5x scale

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.