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Finding the Fourth Proportional to 328,038.60, 492,057.90 and 324,928.20

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Solution

The fourth proportional to 328,038.60, 492,057.90 and 324,928.20 is: 487,392.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,038.60 : 492,057.90 = 324,928.20 : x
  2. Step 2: Convert to fraction form
    328,038.60/492,057.90 = 324,928.20/x
  3. Step 3: Cross multiply
    328,038.60x = 492,057.90 × 324,928.20
  4. Step 4: Simplify right side
    328,038.60x = 159,883,487,742.78
  5. Step 5: Solve for x
    x = 159,883,487,742.78/328,038.60
  6. Step 6: Final answer
    x = 487,392.30

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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.