Home / 388,252.39-535,787.20-218,486.52

Finding the Fourth Proportional to 388,252.39, 535,787.20 and 218,486.52

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Solution

The fourth proportional to 388,252.39, 535,787.20 and 218,486.52 is: 301,510.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,252.39 : 535,787.20 = 218,486.52 : x
  2. Step 2: Convert to fraction form
    388,252.39/535,787.20 = 218,486.52/x
  3. Step 3: Cross multiply
    388,252.39x = 535,787.20 × 218,486.52
  4. Step 4: Simplify right side
    388,252.39x = 117,062,280,788.54
  5. Step 5: Solve for x
    x = 117,062,280,788.54/388,252.39
  6. Step 6: Final answer
    x = 301,510.78

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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.