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Finding the Fourth Proportional to 550,276.80, 825,415.20 and 217,852.80

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Solution

The fourth proportional to 550,276.80, 825,415.20 and 217,852.80 is: 326,779.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,276.80 : 825,415.20 = 217,852.80 : x
  2. Step 2: Convert to fraction form
    550,276.80/825,415.20 = 217,852.80/x
  3. Step 3: Cross multiply
    550,276.80x = 825,415.20 × 217,852.80
  4. Step 4: Simplify right side
    550,276.80x = 179,819,012,482.56
  5. Step 5: Solve for x
    x = 179,819,012,482.56/550,276.80
  6. Step 6: Final answer
    x = 326,779.20

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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.