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Finding the Fourth Proportional to 347,697.78, 521,590.44 and 123,005.40

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Solution

The fourth proportional to 347,697.78, 521,590.44 and 123,005.40 is: 184,523.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,697.78 : 521,590.44 = 123,005.40 : x
  2. Step 2: Convert to fraction form
    347,697.78/521,590.44 = 123,005.40/x
  3. Step 3: Cross multiply
    347,697.78x = 521,590.44 × 123,005.40
  4. Step 4: Simplify right side
    347,697.78x = 64,158,440,708.38
  5. Step 5: Solve for x
    x = 64,158,440,708.38/347,697.78
  6. Step 6: Final answer
    x = 184,523.58

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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.