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Finding the Fourth Proportional to 240,369.20, 360,078.60 and 210,820.40

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Solution

The fourth proportional to 240,369.20, 360,078.60 and 210,820.40 is: 315,813.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,369.20 : 360,078.60 = 210,820.40 : x
  2. Step 2: Convert to fraction form
    240,369.20/360,078.60 = 210,820.40/x
  3. Step 3: Cross multiply
    240,369.20x = 360,078.60 × 210,820.40
  4. Step 4: Simplify right side
    240,369.20x = 75,911,914,483.44
  5. Step 5: Solve for x
    x = 75,911,914,483.44/240,369.20
  6. Step 6: Final answer
    x = 315,813.82

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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.