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Finding the Fourth Proportional to 539,994.48, 745,187.70 and 298,293.93

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Solution

The fourth proportional to 539,994.48, 745,187.70 and 298,293.93 is: 411,643.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,994.48 : 745,187.70 = 298,293.93 : x
  2. Step 2: Convert to fraction form
    539,994.48/745,187.70 = 298,293.93/x
  3. Step 3: Cross multiply
    539,994.48x = 745,187.70 × 298,293.93
  4. Step 4: Simplify right side
    539,994.48x = 222,284,967,620.66
  5. Step 5: Solve for x
    x = 222,284,967,620.66/539,994.48
  6. Step 6: Final answer
    x = 411,643.04

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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.