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Finding the Fourth Proportional to 311,500.53, 429,870.68 and 168,260.58

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Solution

The fourth proportional to 311,500.53, 429,870.68 and 168,260.58 is: 232,199.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,500.53 : 429,870.68 = 168,260.58 : x
  2. Step 2: Convert to fraction form
    311,500.53/429,870.68 = 168,260.58/x
  3. Step 3: Cross multiply
    311,500.53x = 429,870.68 × 168,260.58
  4. Step 4: Simplify right side
    311,500.53x = 72,330,289,100.49
  5. Step 5: Solve for x
    x = 72,330,289,100.49/311,500.53
  6. Step 6: Final answer
    x = 232,199.57

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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.