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Finding the Fourth Proportional to 338,855.40, 508,246.65 and 89,537.40

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Solution

The fourth proportional to 338,855.40, 508,246.65 and 89,537.40 is: 134,296.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,855.40 : 508,246.65 = 89,537.40 : x
  2. Step 2: Convert to fraction form
    338,855.40/508,246.65 = 89,537.40/x
  3. Step 3: Cross multiply
    338,855.40x = 508,246.65 × 89,537.40
  4. Step 4: Simplify right side
    338,855.40x = 45,507,083,599.71
  5. Step 5: Solve for x
    x = 45,507,083,599.71/338,855.40
  6. Step 6: Final answer
    x = 134,296.47

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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.