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Finding the Fourth Proportional to 435,939.84, 653,672.64 and 136,291.20

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Solution

The fourth proportional to 435,939.84, 653,672.64 and 136,291.20 is: 204,362.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,939.84 : 653,672.64 = 136,291.20 : x
  2. Step 2: Convert to fraction form
    435,939.84/653,672.64 = 136,291.20/x
  3. Step 3: Cross multiply
    435,939.84x = 653,672.64 × 136,291.20
  4. Step 4: Simplify right side
    435,939.84x = 89,089,828,512.77
  5. Step 5: Solve for x
    x = 89,089,828,512.77/435,939.84
  6. Step 6: Final answer
    x = 204,362.67

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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.