Home / 387,431.04-580,835.52-218,847.36

Finding the Fourth Proportional to 387,431.04, 580,835.52 and 218,847.36

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Solution

The fourth proportional to 387,431.04, 580,835.52 and 218,847.36 is: 328,095.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,431.04 : 580,835.52 = 218,847.36 : x
  2. Step 2: Convert to fraction form
    387,431.04/580,835.52 = 218,847.36/x
  3. Step 3: Cross multiply
    387,431.04x = 580,835.52 × 218,847.36
  4. Step 4: Simplify right side
    387,431.04x = 127,114,320,146.23
  5. Step 5: Solve for x
    x = 127,114,320,146.23/387,431.04
  6. Step 6: Final answer
    x = 328,095.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.