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Finding the Fourth Proportional to 390,733.44, 586,112.33 and 134,563.38

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Solution

The fourth proportional to 390,733.44, 586,112.33 and 134,563.38 is: 201,849.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,733.44 : 586,112.33 = 134,563.38 : x
  2. Step 2: Convert to fraction form
    390,733.44/586,112.33 = 134,563.38/x
  3. Step 3: Cross multiply
    390,733.44x = 586,112.33 × 134,563.38
  4. Step 4: Simplify right side
    390,733.44x = 78,869,256,184.48
  5. Step 5: Solve for x
    x = 78,869,256,184.48/390,733.44
  6. Step 6: Final answer
    x = 201,849.26

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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.