Home / 312,965.24-469,529.76-135,430.64

Finding the Fourth Proportional to 312,965.24, 469,529.76 and 135,430.64

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Solution

The fourth proportional to 312,965.24, 469,529.76 and 135,430.64 is: 203,181.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,965.24 : 469,529.76 = 135,430.64 : x
  2. Step 2: Convert to fraction form
    312,965.24/469,529.76 = 135,430.64/x
  3. Step 3: Cross multiply
    312,965.24x = 469,529.76 × 135,430.64
  4. Step 4: Simplify right side
    312,965.24x = 63,588,715,895.85
  5. Step 5: Solve for x
    x = 63,588,715,895.85/312,965.24
  6. Step 6: Final answer
    x = 203,181.40

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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.