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Finding the Fourth Proportional to 390,481.29, 585,302.76 and 165,652.02

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Solution

The fourth proportional to 390,481.29, 585,302.76 and 165,652.02 is: 248,300.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,481.29 : 585,302.76 = 165,652.02 : x
  2. Step 2: Convert to fraction form
    390,481.29/585,302.76 = 165,652.02/x
  3. Step 3: Cross multiply
    390,481.29x = 585,302.76 × 165,652.02
  4. Step 4: Simplify right side
    390,481.29x = 96,956,584,505.58
  5. Step 5: Solve for x
    x = 96,956,584,505.58/390,481.29
  6. Step 6: Final answer
    x = 248,300.21

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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.