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Finding the Fourth Proportional to 390,000.15, 585,185.99 and 270,241.79

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Solution

The fourth proportional to 390,000.15, 585,185.99 and 270,241.79 is: 405,491.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,000.15 : 585,185.99 = 270,241.79 : x
  2. Step 2: Convert to fraction form
    390,000.15/585,185.99 = 270,241.79/x
  3. Step 3: Cross multiply
    390,000.15x = 585,185.99 × 270,241.79
  4. Step 4: Simplify right side
    390,000.15x = 158,141,705,143.38
  5. Step 5: Solve for x
    x = 158,141,705,143.38/390,000.15
  6. Step 6: Final answer
    x = 405,491.40

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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.