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Finding the Fourth Proportional to 390,524.39, 585,671.75 and 165,883.04

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Solution

The fourth proportional to 390,524.39, 585,671.75 and 165,883.04 is: 248,775.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,524.39 : 585,671.75 = 165,883.04 : x
  2. Step 2: Convert to fraction form
    390,524.39/585,671.75 = 165,883.04/x
  3. Step 3: Cross multiply
    390,524.39x = 585,671.75 × 165,883.04
  4. Step 4: Simplify right side
    390,524.39x = 97,153,006,574.35
  5. Step 5: Solve for x
    x = 97,153,006,574.35/390,524.39
  6. Step 6: Final answer
    x = 248,775.78

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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.