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Finding the Fourth Proportional to 400,779.29, 553,081.67 and 219,487.93

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Solution

The fourth proportional to 400,779.29, 553,081.67 and 219,487.93 is: 302,896.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,779.29 : 553,081.67 = 219,487.93 : x
  2. Step 2: Convert to fraction form
    400,779.29/553,081.67 = 219,487.93/x
  3. Step 3: Cross multiply
    400,779.29x = 553,081.67 × 219,487.93
  4. Step 4: Simplify right side
    400,779.29x = 121,394,749,212.18
  5. Step 5: Solve for x
    x = 121,394,749,212.18/400,779.29
  6. Step 6: Final answer
    x = 302,896.76

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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.