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Finding the Fourth Proportional to 438,193, 604,706.34 and 236,989

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Solution

The fourth proportional to 438,193, 604,706.34 and 236,989 is: 327,044.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,193 : 604,706.34 = 236,989 : x
  2. Step 2: Convert to fraction form
    438,193/604,706.34 = 236,989/x
  3. Step 3: Cross multiply
    438,193x = 604,706.34 × 236,989
  4. Step 4: Simplify right side
    438,193x = 143,308,750,810.26
  5. Step 5: Solve for x
    x = 143,308,750,810.26/438,193
  6. Step 6: Final answer
    x = 327,044.82

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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.