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Finding the Fourth Proportional to 373,815.60, 515,847.51 and 212,655.48

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Solution

The fourth proportional to 373,815.60, 515,847.51 and 212,655.48 is: 293,454.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,815.60 : 515,847.51 = 212,655.48 : x
  2. Step 2: Convert to fraction form
    373,815.60/515,847.51 = 212,655.48/x
  3. Step 3: Cross multiply
    373,815.60x = 515,847.51 × 212,655.48
  4. Step 4: Simplify right side
    373,815.60x = 109,697,799,845.86
  5. Step 5: Solve for x
    x = 109,697,799,845.86/373,815.60
  6. Step 6: Final answer
    x = 293,454.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.