Home / 388,815.09-536,595.94-216,788.81

Finding the Fourth Proportional to 388,815.09, 536,595.94 and 216,788.81

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Solution

The fourth proportional to 388,815.09, 536,595.94 and 216,788.81 is: 299,185.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,815.09 : 536,595.94 = 216,788.81 : x
  2. Step 2: Convert to fraction form
    388,815.09/536,595.94 = 216,788.81/x
  3. Step 3: Cross multiply
    388,815.09x = 536,595.94 × 216,788.81
  4. Step 4: Simplify right side
    388,815.09x = 116,327,992,871.44
  5. Step 5: Solve for x
    x = 116,327,992,871.44/388,815.09
  6. Step 6: Final answer
    x = 299,185.90

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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.