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Finding the Fourth Proportional to 438,820.26, 605,616.66 and 316,413.33

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Solution

The fourth proportional to 438,820.26, 605,616.66 and 316,413.33 is: 436,682.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,820.26 : 605,616.66 = 316,413.33 : x
  2. Step 2: Convert to fraction form
    438,820.26/605,616.66 = 316,413.33/x
  3. Step 3: Cross multiply
    438,820.26x = 605,616.66 × 316,413.33
  4. Step 4: Simplify right side
    438,820.26x = 191,625,184,094.08
  5. Step 5: Solve for x
    x = 191,625,184,094.08/438,820.26
  6. Step 6: Final answer
    x = 436,682.63

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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.