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Finding the Fourth Proportional to 487,990.37, 673,426.61 and 273,130.48

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Solution

The fourth proportional to 487,990.37, 673,426.61 and 273,130.48 is: 376,920.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,990.37 : 673,426.61 = 273,130.48 : x
  2. Step 2: Convert to fraction form
    487,990.37/673,426.61 = 273,130.48/x
  3. Step 3: Cross multiply
    487,990.37x = 673,426.61 × 273,130.48
  4. Step 4: Simplify right side
    487,990.37x = 183,933,333,734.44
  5. Step 5: Solve for x
    x = 183,933,333,734.44/487,990.37
  6. Step 6: Final answer
    x = 376,920.01

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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.