Home / 385,262.28-531,685.62-215,507.88

Finding the Fourth Proportional to 385,262.28, 531,685.62 and 215,507.88

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Solution

The fourth proportional to 385,262.28, 531,685.62 and 215,507.88 is: 297,414.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,262.28 : 531,685.62 = 215,507.88 : x
  2. Step 2: Convert to fraction form
    385,262.28/531,685.62 = 215,507.88/x
  3. Step 3: Cross multiply
    385,262.28x = 531,685.62 × 215,507.88
  4. Step 4: Simplify right side
    385,262.28x = 114,582,440,792.69
  5. Step 5: Solve for x
    x = 114,582,440,792.69/385,262.28
  6. Step 6: Final answer
    x = 297,414.12

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1.5x scale

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.