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Finding the Fourth Proportional to 338,783.40, 508,175.10 and 89,465.40

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Solution

The fourth proportional to 338,783.40, 508,175.10 and 89,465.40 is: 134,198.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,783.40 : 508,175.10 = 89,465.40 : x
  2. Step 2: Convert to fraction form
    338,783.40/508,175.10 = 89,465.40/x
  3. Step 3: Cross multiply
    338,783.40x = 508,175.10 × 89,465.40
  4. Step 4: Simplify right side
    338,783.40x = 45,464,088,591.54
  5. Step 5: Solve for x
    x = 45,464,088,591.54/338,783.40
  6. Step 6: Final answer
    x = 134,198.10

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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.