Home / 209,828.10-289,476.12-146,202.78

Finding the Fourth Proportional to 209,828.10, 289,476.12 and 146,202.78

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Solution

The fourth proportional to 209,828.10, 289,476.12 and 146,202.78 is: 201,699.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,828.10 : 289,476.12 = 146,202.78 : x
  2. Step 2: Convert to fraction form
    209,828.10/289,476.12 = 146,202.78/x
  3. Step 3: Cross multiply
    209,828.10x = 289,476.12 × 146,202.78
  4. Step 4: Simplify right side
    209,828.10x = 42,322,213,487.61
  5. Step 5: Solve for x
    x = 42,322,213,487.61/209,828.10
  6. Step 6: Final answer
    x = 201,699.46

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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.