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Finding the Fourth Proportional to 286,590.60, 429,230.28 and 136,936.08

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Solution

The fourth proportional to 286,590.60, 429,230.28 and 136,936.08 is: 205,090.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,590.60 : 429,230.28 = 136,936.08 : x
  2. Step 2: Convert to fraction form
    286,590.60/429,230.28 = 136,936.08/x
  3. Step 3: Cross multiply
    286,590.60x = 429,230.28 × 136,936.08
  4. Step 4: Simplify right side
    286,590.60x = 58,777,111,960.50
  5. Step 5: Solve for x
    x = 58,777,111,960.50/286,590.60
  6. Step 6: Final answer
    x = 205,090.86

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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.