Home / 386,780.87-533,766.80-217,027.55

Finding the Fourth Proportional to 386,780.87, 533,766.80 and 217,027.55

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Solution

The fourth proportional to 386,780.87, 533,766.80 and 217,027.55 is: 299,503.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,780.87 : 533,766.80 = 217,027.55 : x
  2. Step 2: Convert to fraction form
    386,780.87/533,766.80 = 217,027.55/x
  3. Step 3: Cross multiply
    386,780.87x = 533,766.80 × 217,027.55
  4. Step 4: Simplify right side
    386,780.87x = 115,842,100,875.34
  5. Step 5: Solve for x
    x = 115,842,100,875.34/386,780.87
  6. Step 6: Final answer
    x = 299,503.18

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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.