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Finding the Fourth Proportional to 487,744.94, 673,127.85 and 281,077.63

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Solution

The fourth proportional to 487,744.94, 673,127.85 and 281,077.63 is: 387,910.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,744.94 : 673,127.85 = 281,077.63 : x
  2. Step 2: Convert to fraction form
    487,744.94/673,127.85 = 281,077.63/x
  3. Step 3: Cross multiply
    487,744.94x = 673,127.85 × 281,077.63
  4. Step 4: Simplify right side
    487,744.94x = 189,201,180,136.22
  5. Step 5: Solve for x
    x = 189,201,180,136.22/487,744.94
  6. Step 6: Final answer
    x = 387,910.08

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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.