Home / 386,955.18-533,968.88-217,156.50

Finding the Fourth Proportional to 386,955.18, 533,968.88 and 217,156.50

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Solution

The fourth proportional to 386,955.18, 533,968.88 and 217,156.50 is: 299,659.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,955.18 : 533,968.88 = 217,156.50 : x
  2. Step 2: Convert to fraction form
    386,955.18/533,968.88 = 217,156.50/x
  3. Step 3: Cross multiply
    386,955.18x = 533,968.88 × 217,156.50
  4. Step 4: Simplify right side
    386,955.18x = 115,954,812,003.94
  5. Step 5: Solve for x
    x = 115,954,812,003.94/386,955.18
  6. Step 6: Final answer
    x = 299,659.54

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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.