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Finding the Fourth Proportional to 408,886.40, 612,163.20 and 362,230.40

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Solution

The fourth proportional to 408,886.40, 612,163.20 and 362,230.40 is: 542,312.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,886.40 : 612,163.20 = 362,230.40 : x
  2. Step 2: Convert to fraction form
    408,886.40/612,163.20 = 362,230.40/x
  3. Step 3: Cross multiply
    408,886.40x = 612,163.20 × 362,230.40
  4. Step 4: Simplify right side
    408,886.40x = 221,744,120,801.28
  5. Step 5: Solve for x
    x = 221,744,120,801.28/408,886.40
  6. Step 6: Final answer
    x = 542,312.29

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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.