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Finding the Fourth Proportional to 438,902, 605,684.80 and 237,698

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Solution

The fourth proportional to 438,902, 605,684.80 and 237,698 is: 328,023.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,902 : 605,684.80 = 237,698 : x
  2. Step 2: Convert to fraction form
    438,902/605,684.80 = 237,698/x
  3. Step 3: Cross multiply
    438,902x = 605,684.80 × 237,698
  4. Step 4: Simplify right side
    438,902x = 143,970,065,590.40
  5. Step 5: Solve for x
    x = 143,970,065,590.40/438,902
  6. Step 6: Final answer
    x = 328,023.26

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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.