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Finding the Fourth Proportional to 245,411.18, 338,662.93 and 136,514.98

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Solution

The fourth proportional to 245,411.18, 338,662.93 and 136,514.98 is: 188,388.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,411.18 : 338,662.93 = 136,514.98 : x
  2. Step 2: Convert to fraction form
    245,411.18/338,662.93 = 136,514.98/x
  3. Step 3: Cross multiply
    245,411.18x = 338,662.93 × 136,514.98
  4. Step 4: Simplify right side
    245,411.18x = 46,232,562,774.40
  5. Step 5: Solve for x
    x = 46,232,562,774.40/245,411.18
  6. Step 6: Final answer
    x = 188,388.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.