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Finding the Fourth Proportional to 328,099.60, 492,088.65 and 91,393.30

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Solution

The fourth proportional to 328,099.60, 492,088.65 and 91,393.30 is: 137,073.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,099.60 : 492,088.65 = 91,393.30 : x
  2. Step 2: Convert to fraction form
    328,099.60/492,088.65 = 91,393.30/x
  3. Step 3: Cross multiply
    328,099.60x = 492,088.65 × 91,393.30
  4. Step 4: Simplify right side
    328,099.60x = 44,973,605,616.05
  5. Step 5: Solve for x
    x = 44,973,605,616.05/328,099.60
  6. Step 6: Final answer
    x = 137,073.03

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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.