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Finding the Fourth Proportional to 524,374.60, 786,756.30 and 209,057.80

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Solution

The fourth proportional to 524,374.60, 786,756.30 and 209,057.80 is: 313,664.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,374.60 : 786,756.30 = 209,057.80 : x
  2. Step 2: Convert to fraction form
    524,374.60/786,756.30 = 209,057.80/x
  3. Step 3: Cross multiply
    524,374.60x = 786,756.30 × 209,057.80
  4. Step 4: Simplify right side
    524,374.60x = 164,477,541,214.14
  5. Step 5: Solve for x
    x = 164,477,541,214.14/524,374.60
  6. Step 6: Final answer
    x = 313,664.20

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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.