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Finding the Fourth Proportional to 405,899.91, 606,360.94 and 292,613.31

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Solution

The fourth proportional to 405,899.91, 606,360.94 and 292,613.31 is: 437,125.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,899.91 : 606,360.94 = 292,613.31 : x
  2. Step 2: Convert to fraction form
    405,899.91/606,360.94 = 292,613.31/x
  3. Step 3: Cross multiply
    405,899.91x = 606,360.94 × 292,613.31
  4. Step 4: Simplify right side
    405,899.91x = 177,429,280,976.58
  5. Step 5: Solve for x
    x = 177,429,280,976.58/405,899.91
  6. Step 6: Final answer
    x = 437,125.70

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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.