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Finding the Fourth Proportional to 400,590.51, 552,814.86 and 219,301.87

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Solution

The fourth proportional to 400,590.51, 552,814.86 and 219,301.87 is: 302,636.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,590.51 : 552,814.86 = 219,301.87 : x
  2. Step 2: Convert to fraction form
    400,590.51/552,814.86 = 219,301.87/x
  3. Step 3: Cross multiply
    400,590.51x = 552,814.86 × 219,301.87
  4. Step 4: Simplify right side
    400,590.51x = 121,233,332,561.79
  5. Step 5: Solve for x
    x = 121,233,332,561.79/400,590.51
  6. Step 6: Final answer
    x = 302,636.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.