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Finding the Fourth Proportional to 370,511.94, 511,299.79 and 209,363.50

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Solution

The fourth proportional to 370,511.94, 511,299.79 and 209,363.50 is: 288,917.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,511.94 : 511,299.79 = 209,363.50 : x
  2. Step 2: Convert to fraction form
    370,511.94/511,299.79 = 209,363.50/x
  3. Step 3: Cross multiply
    370,511.94x = 511,299.79 × 209,363.50
  4. Step 4: Simplify right side
    370,511.94x = 107,047,513,583.67
  5. Step 5: Solve for x
    x = 107,047,513,583.67/370,511.94
  6. Step 6: Final answer
    x = 288,917.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.