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Finding the Fourth Proportional to 529,421.80, 794,132.70 and 213,716.20

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Solution

The fourth proportional to 529,421.80, 794,132.70 and 213,716.20 is: 320,574.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,421.80 : 794,132.70 = 213,716.20 : x
  2. Step 2: Convert to fraction form
    529,421.80/794,132.70 = 213,716.20/x
  3. Step 3: Cross multiply
    529,421.80x = 794,132.70 × 213,716.20
  4. Step 4: Simplify right side
    529,421.80x = 169,719,022,939.74
  5. Step 5: Solve for x
    x = 169,719,022,939.74/529,421.80
  6. Step 6: Final answer
    x = 320,574.30

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Double scale
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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.