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Finding the Fourth Proportional to 328,208.74, 492,269.36 and 91,531.60

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Solution

The fourth proportional to 328,208.74, 492,269.36 and 91,531.60 is: 137,285.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,208.74 : 492,269.36 = 91,531.60 : x
  2. Step 2: Convert to fraction form
    328,208.74/492,269.36 = 91,531.60/x
  3. Step 3: Cross multiply
    328,208.74x = 492,269.36 × 91,531.60
  4. Step 4: Simplify right side
    328,208.74x = 45,058,200,463.44
  5. Step 5: Solve for x
    x = 45,058,200,463.44/328,208.74
  6. Step 6: Final answer
    x = 137,285.19

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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.