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Finding the Fourth Proportional to 539,605.12, 744,755.52 and 310,296.64

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Solution

The fourth proportional to 539,605.12, 744,755.52 and 310,296.64 is: 428,267.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,605.12 : 744,755.52 = 310,296.64 : x
  2. Step 2: Convert to fraction form
    539,605.12/744,755.52 = 310,296.64/x
  3. Step 3: Cross multiply
    539,605.12x = 744,755.52 × 310,296.64
  4. Step 4: Simplify right side
    539,605.12x = 231,095,135,477.45
  5. Step 5: Solve for x
    x = 231,095,135,477.45/539,605.12
  6. Step 6: Final answer
    x = 428,267.13

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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.