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Finding the Fourth Proportional to 245,086.48, 367,368.34 and 139,678.48

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Solution

The fourth proportional to 245,086.48, 367,368.34 and 139,678.48 is: 209,368.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,086.48 : 367,368.34 = 139,678.48 : x
  2. Step 2: Convert to fraction form
    245,086.48/367,368.34 = 139,678.48/x
  3. Step 3: Cross multiply
    245,086.48x = 367,368.34 × 139,678.48
  4. Step 4: Simplify right side
    245,086.48x = 51,313,451,331.32
  5. Step 5: Solve for x
    x = 51,313,451,331.32/245,086.48
  6. Step 6: Final answer
    x = 209,368.76

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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.