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Finding the Fourth Proportional to 534,814.40, 802,221.60 and 219,166.40

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Solution

The fourth proportional to 534,814.40, 802,221.60 and 219,166.40 is: 328,749.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,814.40 : 802,221.60 = 219,166.40 : x
  2. Step 2: Convert to fraction form
    534,814.40/802,221.60 = 219,166.40/x
  3. Step 3: Cross multiply
    534,814.40x = 802,221.60 × 219,166.40
  4. Step 4: Simplify right side
    534,814.40x = 175,820,020,074.24
  5. Step 5: Solve for x
    x = 175,820,020,074.24/534,814.40
  6. Step 6: Final answer
    x = 328,749.60

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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.