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Finding the Fourth Proportional to 315,145.01, 472,717.53 and 115,384.43

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Solution

The fourth proportional to 315,145.01, 472,717.53 and 115,384.43 is: 173,076.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,145.01 : 472,717.53 = 115,384.43 : x
  2. Step 2: Convert to fraction form
    315,145.01/472,717.53 = 115,384.43/x
  3. Step 3: Cross multiply
    315,145.01x = 472,717.53 × 115,384.43
  4. Step 4: Simplify right side
    315,145.01x = 54,544,243,931.85
  5. Step 5: Solve for x
    x = 54,544,243,931.85/315,145.01
  6. Step 6: Final answer
    x = 173,076.65

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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.