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Finding the Fourth Proportional to 311,557.90, 429,937.48 and 175,620.05

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Solution

The fourth proportional to 311,557.90, 429,937.48 and 175,620.05 is: 242,348.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,557.90 : 429,937.48 = 175,620.05 : x
  2. Step 2: Convert to fraction form
    311,557.90/429,937.48 = 175,620.05/x
  3. Step 3: Cross multiply
    311,557.90x = 429,937.48 × 175,620.05
  4. Step 4: Simplify right side
    311,557.90x = 75,505,643,028.84
  5. Step 5: Solve for x
    x = 75,505,643,028.84/311,557.90
  6. Step 6: Final answer
    x = 242,348.67

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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.