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Finding the Fourth Proportional to 328,512.10, 492,768.15 and 151,365.10

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Solution

The fourth proportional to 328,512.10, 492,768.15 and 151,365.10 is: 227,047.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,512.10 : 492,768.15 = 151,365.10 : x
  2. Step 2: Convert to fraction form
    328,512.10/492,768.15 = 151,365.10/x
  3. Step 3: Cross multiply
    328,512.10x = 492,768.15 × 151,365.10
  4. Step 4: Simplify right side
    328,512.10x = 74,587,900,301.57
  5. Step 5: Solve for x
    x = 74,587,900,301.57/328,512.10
  6. Step 6: Final answer
    x = 227,047.65

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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.