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Finding the Fourth Proportional to 328,101.60, 492,091.65 and 91,395.30

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Solution

The fourth proportional to 328,101.60, 492,091.65 and 91,395.30 is: 137,076.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,101.60 : 492,091.65 = 91,395.30 : x
  2. Step 2: Convert to fraction form
    328,101.60/492,091.65 = 91,395.30/x
  3. Step 3: Cross multiply
    328,101.60x = 492,091.65 × 91,395.30
  4. Step 4: Simplify right side
    328,101.60x = 44,974,863,979.25
  5. Step 5: Solve for x
    x = 44,974,863,979.25/328,101.60
  6. Step 6: Final answer
    x = 137,076.03

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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.