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Finding the Fourth Proportional to 487,985.94, 673,420.50 and 273,126

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Solution

The fourth proportional to 487,985.94, 673,420.50 and 273,126 is: 376,913.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,985.94 : 673,420.50 = 273,126 : x
  2. Step 2: Convert to fraction form
    487,985.94/673,420.50 = 273,126/x
  3. Step 3: Cross multiply
    487,985.94x = 673,420.50 × 273,126
  4. Step 4: Simplify right side
    487,985.94x = 183,928,647,483
  5. Step 5: Solve for x
    x = 183,928,647,483/487,985.94
  6. Step 6: Final answer
    x = 376,913.83

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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.