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Finding the Fourth Proportional to 311,485.80, 466,937.10 and 243,980.40

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Solution

The fourth proportional to 311,485.80, 466,937.10 and 243,980.40 is: 365,742.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,485.80 : 466,937.10 = 243,980.40 : x
  2. Step 2: Convert to fraction form
    311,485.80/466,937.10 = 243,980.40/x
  3. Step 3: Cross multiply
    311,485.80x = 466,937.10 × 243,980.40
  4. Step 4: Simplify right side
    311,485.80x = 113,923,500,432.84
  5. Step 5: Solve for x
    x = 113,923,500,432.84/311,485.80
  6. Step 6: Final answer
    x = 365,742.20

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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.