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Finding the Fourth Proportional to 550,378.20, 825,567.30 and 361,421.40

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Solution

The fourth proportional to 550,378.20, 825,567.30 and 361,421.40 is: 542,132.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,378.20 : 825,567.30 = 361,421.40 : x
  2. Step 2: Convert to fraction form
    550,378.20/825,567.30 = 361,421.40/x
  3. Step 3: Cross multiply
    550,378.20x = 825,567.30 × 361,421.40
  4. Step 4: Simplify right side
    550,378.20x = 298,377,689,360.22
  5. Step 5: Solve for x
    x = 298,377,689,360.22/550,378.20
  6. Step 6: Final answer
    x = 542,132.10

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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.