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Finding the Fourth Proportional to 539,993.42, 745,176.62 and 298,270.80

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Solution

The fourth proportional to 539,993.42, 745,176.62 and 298,270.80 is: 411,605.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,993.42 : 745,176.62 = 298,270.80 : x
  2. Step 2: Convert to fraction form
    539,993.42/745,176.62 = 298,270.80/x
  3. Step 3: Cross multiply
    539,993.42x = 745,176.62 × 298,270.80
  4. Step 4: Simplify right side
    539,993.42x = 222,264,426,588.70
  5. Step 5: Solve for x
    x = 222,264,426,588.70/539,993.42
  6. Step 6: Final answer
    x = 411,605.81

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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.