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Finding the Fourth Proportional to 202,828.90, 304,214.55 and 69,715.30

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Solution

The fourth proportional to 202,828.90, 304,214.55 and 69,715.30 is: 104,563.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,828.90 : 304,214.55 = 69,715.30 : x
  2. Step 2: Convert to fraction form
    202,828.90/304,214.55 = 69,715.30/x
  3. Step 3: Cross multiply
    202,828.90x = 304,214.55 × 69,715.30
  4. Step 4: Simplify right side
    202,828.90x = 21,208,408,617.62
  5. Step 5: Solve for x
    x = 21,208,408,617.62/202,828.90
  6. Step 6: Final answer
    x = 104,563.05

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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.