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Finding the Fourth Proportional to 508,349.58, 762,396.12 and 208,912.86

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Solution

The fourth proportional to 508,349.58, 762,396.12 and 208,912.86 is: 313,316.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,349.58 : 762,396.12 = 208,912.86 : x
  2. Step 2: Convert to fraction form
    508,349.58/762,396.12 = 208,912.86/x
  3. Step 3: Cross multiply
    508,349.58x = 762,396.12 × 208,912.86
  4. Step 4: Simplify right side
    508,349.58x = 159,274,353,882.10
  5. Step 5: Solve for x
    x = 159,274,353,882.10/508,349.58
  6. Step 6: Final answer
    x = 313,316.58

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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.