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Finding the Fourth Proportional to 487,999.92, 673,439.84 and 273,140

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Solution

The fourth proportional to 487,999.92, 673,439.84 and 273,140 is: 376,933.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,999.92 : 673,439.84 = 273,140 : x
  2. Step 2: Convert to fraction form
    487,999.92/673,439.84 = 273,140/x
  3. Step 3: Cross multiply
    487,999.92x = 673,439.84 × 273,140
  4. Step 4: Simplify right side
    487,999.92x = 183,943,357,897.60
  5. Step 5: Solve for x
    x = 183,943,357,897.60/487,999.92
  6. Step 6: Final answer
    x = 376,933.17

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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.