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Finding the Fourth Proportional to 445,879.13, 668,888.42 and 146,291.57

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Solution

The fourth proportional to 445,879.13, 668,888.42 and 146,291.57 is: 219,460.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,879.13 : 668,888.42 = 146,291.57 : x
  2. Step 2: Convert to fraction form
    445,879.13/668,888.42 = 146,291.57/x
  3. Step 3: Cross multiply
    445,879.13x = 668,888.42 × 146,291.57
  4. Step 4: Simplify right side
    445,879.13x = 97,852,738,057.38
  5. Step 5: Solve for x
    x = 97,852,738,057.38/445,879.13
  6. Step 6: Final answer
    x = 219,460.23

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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.