Home / 386,930.50-533,964.08-217,164.63

Finding the Fourth Proportional to 386,930.50, 533,964.08 and 217,164.63

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Solution

The fourth proportional to 386,930.50, 533,964.08 and 217,164.63 is: 299,687.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,930.50 : 533,964.08 = 217,164.63 : x
  2. Step 2: Convert to fraction form
    386,930.50/533,964.08 = 217,164.63/x
  3. Step 3: Cross multiply
    386,930.50x = 533,964.08 × 217,164.63
  4. Step 4: Simplify right side
    386,930.50x = 115,958,109,196.67
  5. Step 5: Solve for x
    x = 115,958,109,196.67/386,930.50
  6. Step 6: Final answer
    x = 299,687.18

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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.