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Finding the Fourth Proportional to 338,749.32, 508,123.98 and 89,433.48

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Solution

The fourth proportional to 338,749.32, 508,123.98 and 89,433.48 is: 134,150.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,749.32 : 508,123.98 = 89,433.48 : x
  2. Step 2: Convert to fraction form
    338,749.32/508,123.98 = 89,433.48/x
  3. Step 3: Cross multiply
    338,749.32x = 508,123.98 × 89,433.48
  4. Step 4: Simplify right side
    338,749.32x = 45,443,295,802.85
  5. Step 5: Solve for x
    x = 45,443,295,802.85/338,749.32
  6. Step 6: Final answer
    x = 134,150.22

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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.