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Finding the Fourth Proportional to 387,247.38, 580,509.93 and 130,901.58

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Solution

The fourth proportional to 387,247.38, 580,509.93 and 130,901.58 is: 196,230.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,247.38 : 580,509.93 = 130,901.58 : x
  2. Step 2: Convert to fraction form
    387,247.38/580,509.93 = 130,901.58/x
  3. Step 3: Cross multiply
    387,247.38x = 580,509.93 × 130,901.58
  4. Step 4: Simplify right side
    387,247.38x = 75,989,667,042.69
  5. Step 5: Solve for x
    x = 75,989,667,042.69/387,247.38
  6. Step 6: Final answer
    x = 196,230.29

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1.5x scale

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.