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Finding the Fourth Proportional to 508,262.92, 762,421.74 and 134,275.72

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Solution

The fourth proportional to 508,262.92, 762,421.74 and 134,275.72 is: 201,420.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,262.92 : 762,421.74 = 134,275.72 : x
  2. Step 2: Convert to fraction form
    508,262.92/762,421.74 = 134,275.72/x
  3. Step 3: Cross multiply
    508,262.92x = 762,421.74 × 134,275.72
  4. Step 4: Simplify right side
    508,262.92x = 102,374,728,082.15
  5. Step 5: Solve for x
    x = 102,374,728,082.15/508,262.92
  6. Step 6: Final answer
    x = 201,420.81

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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.