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Finding the Fourth Proportional to 524,416.60, 786,819.30 and 209,099.80

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Solution

The fourth proportional to 524,416.60, 786,819.30 and 209,099.80 is: 313,727.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,416.60 : 786,819.30 = 209,099.80 : x
  2. Step 2: Convert to fraction form
    524,416.60/786,819.30 = 209,099.80/x
  3. Step 3: Cross multiply
    524,416.60x = 786,819.30 × 209,099.80
  4. Step 4: Simplify right side
    524,416.60x = 164,523,758,266.14
  5. Step 5: Solve for x
    x = 164,523,758,266.14/524,416.60
  6. Step 6: Final answer
    x = 313,727.21

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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.