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Finding the Fourth Proportional to 315,046.37, 472,568.61 and 78,389.03

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Solution

The fourth proportional to 315,046.37, 472,568.61 and 78,389.03 is: 117,583.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,046.37 : 472,568.61 = 78,389.03 : x
  2. Step 2: Convert to fraction form
    315,046.37/472,568.61 = 78,389.03/x
  3. Step 3: Cross multiply
    315,046.37x = 472,568.61 × 78,389.03
  4. Step 4: Simplify right side
    315,046.37x = 37,044,194,946.35
  5. Step 5: Solve for x
    x = 37,044,194,946.35/315,046.37
  6. Step 6: Final answer
    x = 117,583.31

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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.