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Finding the Fourth Proportional to 529,426.80, 794,140.20 and 213,721.20

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Solution

The fourth proportional to 529,426.80, 794,140.20 and 213,721.20 is: 320,581.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,426.80 : 794,140.20 = 213,721.20 : x
  2. Step 2: Convert to fraction form
    529,426.80/794,140.20 = 213,721.20/x
  3. Step 3: Cross multiply
    529,426.80x = 794,140.20 × 213,721.20
  4. Step 4: Simplify right side
    529,426.80x = 169,724,596,512.24
  5. Step 5: Solve for x
    x = 169,724,596,512.24/529,426.80
  6. Step 6: Final answer
    x = 320,581.80

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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.