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Finding the Fourth Proportional to 328,087.30, 492,714.15 and 239,440.90

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Solution

The fourth proportional to 328,087.30, 492,714.15 and 239,440.90 is: 359,586.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,087.30 : 492,714.15 = 239,440.90 : x
  2. Step 2: Convert to fraction form
    328,087.30/492,714.15 = 239,440.90/x
  3. Step 3: Cross multiply
    328,087.30x = 492,714.15 × 239,440.90
  4. Step 4: Simplify right side
    328,087.30x = 117,975,919,518.74
  5. Step 5: Solve for x
    x = 117,975,919,518.74/328,087.30
  6. Step 6: Final answer
    x = 359,586.97

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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.