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Finding the Fourth Proportional to 311,523.15, 429,903.63 and 175,559.21

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Solution

The fourth proportional to 311,523.15, 429,903.63 and 175,559.21 is: 242,272.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,523.15 : 429,903.63 = 175,559.21 : x
  2. Step 2: Convert to fraction form
    311,523.15/429,903.63 = 175,559.21/x
  3. Step 3: Cross multiply
    311,523.15x = 429,903.63 × 175,559.21
  4. Step 4: Simplify right side
    311,523.15x = 75,473,539,509.41
  5. Step 5: Solve for x
    x = 75,473,539,509.41/311,523.15
  6. Step 6: Final answer
    x = 242,272.65

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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.