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Finding the Fourth Proportional to 657,105.60, 985,658.40 and 213,873.60

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Solution

The fourth proportional to 657,105.60, 985,658.40 and 213,873.60 is: 320,810.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,105.60 : 985,658.40 = 213,873.60 : x
  2. Step 2: Convert to fraction form
    657,105.60/985,658.40 = 213,873.60/x
  3. Step 3: Cross multiply
    657,105.60x = 985,658.40 × 213,873.60
  4. Step 4: Simplify right side
    657,105.60x = 210,806,310,378.24
  5. Step 5: Solve for x
    x = 210,806,310,378.24/657,105.60
  6. Step 6: Final answer
    x = 320,810.40

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Similar ratio
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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.