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Finding the Fourth Proportional to 438,315.81, 656,924.87 and 235,413.29

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Solution

The fourth proportional to 438,315.81, 656,924.87 and 235,413.29 is: 352,825.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,315.81 : 656,924.87 = 235,413.29 : x
  2. Step 2: Convert to fraction form
    438,315.81/656,924.87 = 235,413.29/x
  3. Step 3: Cross multiply
    438,315.81x = 656,924.87 × 235,413.29
  4. Step 4: Simplify right side
    438,315.81x = 154,648,846,173.93
  5. Step 5: Solve for x
    x = 154,648,846,173.93/438,315.81
  6. Step 6: Final answer
    x = 352,825.16

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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.