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Finding the Fourth Proportional to 328,938.60, 493,407.90 and 325,828.20

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Solution

The fourth proportional to 328,938.60, 493,407.90 and 325,828.20 is: 488,742.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,938.60 : 493,407.90 = 325,828.20 : x
  2. Step 2: Convert to fraction form
    328,938.60/493,407.90 = 325,828.20/x
  3. Step 3: Cross multiply
    328,938.60x = 493,407.90 × 325,828.20
  4. Step 4: Simplify right side
    328,938.60x = 160,766,207,922.78
  5. Step 5: Solve for x
    x = 160,766,207,922.78/328,938.60
  6. Step 6: Final answer
    x = 488,742.30

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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.