Home / 386,965.18-533,982.65-217,166.50

Finding the Fourth Proportional to 386,965.18, 533,982.65 and 217,166.50

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Solution

The fourth proportional to 386,965.18, 533,982.65 and 217,166.50 is: 299,673.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,965.18 : 533,982.65 = 217,166.50 : x
  2. Step 2: Convert to fraction form
    386,965.18/533,982.65 = 217,166.50/x
  3. Step 3: Cross multiply
    386,965.18x = 533,982.65 × 217,166.50
  4. Step 4: Simplify right side
    386,965.18x = 115,963,143,161.23
  5. Step 5: Solve for x
    x = 115,963,143,161.23/386,965.18
  6. Step 6: Final answer
    x = 299,673.33

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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.