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Finding the Fourth Proportional to 524,688.40, 786,125.40 and 243,629.20

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Solution

The fourth proportional to 524,688.40, 786,125.40 and 243,629.20 is: 365,022.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,688.40 : 786,125.40 = 243,629.20 : x
  2. Step 2: Convert to fraction form
    524,688.40/786,125.40 = 243,629.20/x
  3. Step 3: Cross multiply
    524,688.40x = 786,125.40 × 243,629.20
  4. Step 4: Simplify right side
    524,688.40x = 191,523,102,301.68
  5. Step 5: Solve for x
    x = 191,523,102,301.68/524,688.40
  6. Step 6: Final answer
    x = 365,022.56

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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.