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Finding the Fourth Proportional to 604,128.79, 905,999.50 and 199,230.09

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Solution

The fourth proportional to 604,128.79, 905,999.50 and 199,230.09 is: 298,781.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,128.79 : 905,999.50 = 199,230.09 : x
  2. Step 2: Convert to fraction form
    604,128.79/905,999.50 = 199,230.09/x
  3. Step 3: Cross multiply
    604,128.79x = 905,999.50 × 199,230.09
  4. Step 4: Simplify right side
    604,128.79x = 180,502,361,924.96
  5. Step 5: Solve for x
    x = 180,502,361,924.96/604,128.79
  6. Step 6: Final answer
    x = 298,781.26

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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.