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Finding the Fourth Proportional to 203,618.55, 305,354.64 and 70,462.65

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Solution

The fourth proportional to 203,618.55, 305,354.64 and 70,462.65 is: 105,668.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,618.55 : 305,354.64 = 70,462.65 : x
  2. Step 2: Convert to fraction form
    203,618.55/305,354.64 = 70,462.65/x
  3. Step 3: Cross multiply
    203,618.55x = 305,354.64 × 70,462.65
  4. Step 4: Simplify right side
    203,618.55x = 21,516,097,124.20
  5. Step 5: Solve for x
    x = 21,516,097,124.20/203,618.55
  6. Step 6: Final answer
    x = 105,668.65

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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.