Home / 215,639.87-323,328.04-103,354.43

Finding the Fourth Proportional to 215,639.87, 323,328.04 and 103,354.43

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Solution

The fourth proportional to 215,639.87, 323,328.04 and 103,354.43 is: 154,968.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,639.87 : 323,328.04 = 103,354.43 : x
  2. Step 2: Convert to fraction form
    215,639.87/323,328.04 = 103,354.43/x
  3. Step 3: Cross multiply
    215,639.87x = 323,328.04 × 103,354.43
  4. Step 4: Simplify right side
    215,639.87x = 33,417,383,402.19
  5. Step 5: Solve for x
    x = 33,417,383,402.19/215,639.87
  6. Step 6: Final answer
    x = 154,968.49

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1.5x scale

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.