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Finding the Fourth Proportional to 521,435.20, 782,152.80 and 166,475.20

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Solution

The fourth proportional to 521,435.20, 782,152.80 and 166,475.20 is: 249,712.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,435.20 : 782,152.80 = 166,475.20 : x
  2. Step 2: Convert to fraction form
    521,435.20/782,152.80 = 166,475.20/x
  3. Step 3: Cross multiply
    521,435.20x = 782,152.80 × 166,475.20
  4. Step 4: Simplify right side
    521,435.20x = 130,209,043,810.56
  5. Step 5: Solve for x
    x = 130,209,043,810.56/521,435.20
  6. Step 6: Final answer
    x = 249,712.80

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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.