Home / 388,923.50-536,714.43-219,163.70

Finding the Fourth Proportional to 388,923.50, 536,714.43 and 219,163.70

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Solution

The fourth proportional to 388,923.50, 536,714.43 and 219,163.70 is: 302,445.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,923.50 : 536,714.43 = 219,163.70 : x
  2. Step 2: Convert to fraction form
    388,923.50/536,714.43 = 219,163.70/x
  3. Step 3: Cross multiply
    388,923.50x = 536,714.43 × 219,163.70
  4. Step 4: Simplify right side
    388,923.50x = 117,628,320,322.19
  5. Step 5: Solve for x
    x = 117,628,320,322.19/388,923.50
  6. Step 6: Final answer
    x = 302,445.91

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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.