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Finding the Fourth Proportional to 521,360.20, 782,040.30 and 166,400.20

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Solution

The fourth proportional to 521,360.20, 782,040.30 and 166,400.20 is: 249,600.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,360.20 : 782,040.30 = 166,400.20 : x
  2. Step 2: Convert to fraction form
    521,360.20/782,040.30 = 166,400.20/x
  3. Step 3: Cross multiply
    521,360.20x = 782,040.30 × 166,400.20
  4. Step 4: Simplify right side
    521,360.20x = 130,131,662,328.06
  5. Step 5: Solve for x
    x = 130,131,662,328.06/521,360.20
  6. Step 6: Final answer
    x = 249,600.30

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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.