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Finding the Fourth Proportional to 387,109.81, 580,009.30 and 237,036.66

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Solution

The fourth proportional to 387,109.81, 580,009.30 and 237,036.66 is: 355,153.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,109.81 : 580,009.30 = 237,036.66 : x
  2. Step 2: Convert to fraction form
    387,109.81/580,009.30 = 237,036.66/x
  3. Step 3: Cross multiply
    387,109.81x = 580,009.30 × 237,036.66
  4. Step 4: Simplify right side
    387,109.81x = 137,483,467,240.94
  5. Step 5: Solve for x
    x = 137,483,467,240.94/387,109.81
  6. Step 6: Final answer
    x = 355,153.66

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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.