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Finding the Fourth Proportional to 373,346.20, 561,401.70 and 312,520.60

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Solution

The fourth proportional to 373,346.20, 561,401.70 and 312,520.60 is: 469,938.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,346.20 : 561,401.70 = 312,520.60 : x
  2. Step 2: Convert to fraction form
    373,346.20/561,401.70 = 312,520.60/x
  3. Step 3: Cross multiply
    373,346.20x = 561,401.70 × 312,520.60
  4. Step 4: Simplify right side
    373,346.20x = 175,449,596,125.02
  5. Step 5: Solve for x
    x = 175,449,596,125.02/373,346.20
  6. Step 6: Final answer
    x = 469,938.08

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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.