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Finding the Fourth Proportional to 429,325.58, 644,011.16 and 129,798.52

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Solution

The fourth proportional to 429,325.58, 644,011.16 and 129,798.52 is: 194,704.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,325.58 : 644,011.16 = 129,798.52 : x
  2. Step 2: Convert to fraction form
    429,325.58/644,011.16 = 129,798.52/x
  3. Step 3: Cross multiply
    429,325.58x = 644,011.16 × 129,798.52
  4. Step 4: Simplify right side
    429,325.58x = 83,591,695,431.48
  5. Step 5: Solve for x
    x = 83,591,695,431.48/429,325.58
  6. Step 6: Final answer
    x = 194,704.67

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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.