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Finding the Fourth Proportional to 374,479.20, 561,718.80 and 355,233.60

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Solution

The fourth proportional to 374,479.20, 561,718.80 and 355,233.60 is: 532,850.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,479.20 : 561,718.80 = 355,233.60 : x
  2. Step 2: Convert to fraction form
    374,479.20/561,718.80 = 355,233.60/x
  3. Step 3: Cross multiply
    374,479.20x = 561,718.80 × 355,233.60
  4. Step 4: Simplify right side
    374,479.20x = 199,541,391,511.68
  5. Step 5: Solve for x
    x = 199,541,391,511.68/374,479.20
  6. Step 6: Final answer
    x = 532,850.40

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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.