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Finding the Fourth Proportional to 338,967.18, 508,616.62 and 136,554.86

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Solution

The fourth proportional to 338,967.18, 508,616.62 and 136,554.86 is: 204,899.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,967.18 : 508,616.62 = 136,554.86 : x
  2. Step 2: Convert to fraction form
    338,967.18/508,616.62 = 136,554.86/x
  3. Step 3: Cross multiply
    338,967.18x = 508,616.62 × 136,554.86
  4. Step 4: Simplify right side
    338,967.18x = 69,454,072,267.93
  5. Step 5: Solve for x
    x = 69,454,072,267.93/338,967.18
  6. Step 6: Final answer
    x = 204,899.11

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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.