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Finding the Fourth Proportional to 487,853.42, 673,265.93 and 272,991.60

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Solution

The fourth proportional to 487,853.42, 673,265.93 and 272,991.60 is: 376,744.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,853.42 : 673,265.93 = 272,991.60 : x
  2. Step 2: Convert to fraction form
    487,853.42/673,265.93 = 272,991.60/x
  3. Step 3: Cross multiply
    487,853.42x = 673,265.93 × 272,991.60
  4. Step 4: Simplify right side
    487,853.42x = 183,795,942,091.23
  5. Step 5: Solve for x
    x = 183,795,942,091.23/487,853.42
  6. Step 6: Final answer
    x = 376,744.19

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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.