Home / 386,550.12-533,438.13-216,787.89

Finding the Fourth Proportional to 386,550.12, 533,438.13 and 216,787.89

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Solution

The fourth proportional to 386,550.12, 533,438.13 and 216,787.89 is: 299,166.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,550.12 : 533,438.13 = 216,787.89 : x
  2. Step 2: Convert to fraction form
    386,550.12/533,438.13 = 216,787.89/x
  3. Step 3: Cross multiply
    386,550.12x = 533,438.13 × 216,787.89
  4. Step 4: Simplify right side
    386,550.12x = 115,642,926,648.25
  5. Step 5: Solve for x
    x = 115,642,926,648.25/386,550.12
  6. Step 6: Final answer
    x = 299,166.71

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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.