Home / 219,808.18-303,351.60-123,021.76

Finding the Fourth Proportional to 219,808.18, 303,351.60 and 123,021.76

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Solution

The fourth proportional to 219,808.18, 303,351.60 and 123,021.76 is: 169,779.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,808.18 : 303,351.60 = 123,021.76 : x
  2. Step 2: Convert to fraction form
    219,808.18/303,351.60 = 123,021.76/x
  3. Step 3: Cross multiply
    219,808.18x = 303,351.60 × 123,021.76
  4. Step 4: Simplify right side
    219,808.18x = 37,318,847,730.82
  5. Step 5: Solve for x
    x = 37,318,847,730.82/219,808.18
  6. Step 6: Final answer
    x = 169,779.16

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1.5x scale

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.