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Finding the Fourth Proportional to 366,972.70, 550,459.05 and 209,508.70

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Solution

The fourth proportional to 366,972.70, 550,459.05 and 209,508.70 is: 314,263.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,972.70 : 550,459.05 = 209,508.70 : x
  2. Step 2: Convert to fraction form
    366,972.70/550,459.05 = 209,508.70/x
  3. Step 3: Cross multiply
    366,972.70x = 550,459.05 × 209,508.70
  4. Step 4: Simplify right side
    366,972.70x = 115,325,959,968.74
  5. Step 5: Solve for x
    x = 115,325,959,968.74/366,972.70
  6. Step 6: Final answer
    x = 314,263.05

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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.