Home / 372,123.64-513,544.14-213,178.36

Finding the Fourth Proportional to 372,123.64, 513,544.14 and 213,178.36

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Solution

The fourth proportional to 372,123.64, 513,544.14 and 213,178.36 is: 294,193.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,123.64 : 513,544.14 = 213,178.36 : x
  2. Step 2: Convert to fraction form
    372,123.64/513,544.14 = 213,178.36/x
  3. Step 3: Cross multiply
    372,123.64x = 513,544.14 × 213,178.36
  4. Step 4: Simplify right side
    372,123.64x = 109,476,497,552.81
  5. Step 5: Solve for x
    x = 109,476,497,552.81/372,123.64
  6. Step 6: Final answer
    x = 294,193.88

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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.