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Finding the Fourth Proportional to 390,194.58, 585,249.30 and 264,641.34

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Solution

The fourth proportional to 390,194.58, 585,249.30 and 264,641.34 is: 396,933.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,194.58 : 585,249.30 = 264,641.34 : x
  2. Step 2: Convert to fraction form
    390,194.58/585,249.30 = 264,641.34/x
  3. Step 3: Cross multiply
    390,194.58x = 585,249.30 × 264,641.34
  4. Step 4: Simplify right side
    390,194.58x = 154,881,158,986.06
  5. Step 5: Solve for x
    x = 154,881,158,986.06/390,194.58
  6. Step 6: Final answer
    x = 396,933.14

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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.