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Finding the Fourth Proportional to 366,905.40, 550,358.10 and 307,856.40

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Solution

The fourth proportional to 366,905.40, 550,358.10 and 307,856.40 is: 461,784.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,905.40 : 550,358.10 = 307,856.40 : x
  2. Step 2: Convert to fraction form
    366,905.40/550,358.10 = 307,856.40/x
  3. Step 3: Cross multiply
    366,905.40x = 550,358.10 × 307,856.40
  4. Step 4: Simplify right side
    366,905.40x = 169,431,263,376.84
  5. Step 5: Solve for x
    x = 169,431,263,376.84/366,905.40
  6. Step 6: Final answer
    x = 461,784.60

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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.