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Finding the Fourth Proportional to 315,108.36, 472,575.06 and 87,349.59

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Solution

The fourth proportional to 315,108.36, 472,575.06 and 87,349.59 is: 131,000.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,108.36 : 472,575.06 = 87,349.59 : x
  2. Step 2: Convert to fraction form
    315,108.36/472,575.06 = 87,349.59/x
  3. Step 3: Cross multiply
    315,108.36x = 472,575.06 × 87,349.59
  4. Step 4: Simplify right side
    315,108.36x = 41,279,237,735.23
  5. Step 5: Solve for x
    x = 41,279,237,735.23/315,108.36
  6. Step 6: Final answer
    x = 131,000.14

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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.