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Finding the Fourth Proportional to 279,425.38, 417,109.43 and 258,609.46

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Solution

The fourth proportional to 279,425.38, 417,109.43 and 258,609.46 is: 386,036.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,425.38 : 417,109.43 = 258,609.46 : x
  2. Step 2: Convert to fraction form
    279,425.38/417,109.43 = 258,609.46/x
  3. Step 3: Cross multiply
    279,425.38x = 417,109.43 × 258,609.46
  4. Step 4: Simplify right side
    279,425.38x = 107,868,444,453.21
  5. Step 5: Solve for x
    x = 107,868,444,453.21/279,425.38
  6. Step 6: Final answer
    x = 386,036.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.