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Finding the Fourth Proportional to 391,201.04, 586,801.54 and 213,611.17

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Solution

The fourth proportional to 391,201.04, 586,801.54 and 213,611.17 is: 320,416.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,201.04 : 586,801.54 = 213,611.17 : x
  2. Step 2: Convert to fraction form
    391,201.04/586,801.54 = 213,611.17/x
  3. Step 3: Cross multiply
    391,201.04x = 586,801.54 × 213,611.17
  4. Step 4: Simplify right side
    391,201.04x = 125,347,362,449.15
  5. Step 5: Solve for x
    x = 125,347,362,449.15/391,201.04
  6. Step 6: Final answer
    x = 320,416.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.