Home / 429,510.20-644,264.48-113,942.30

Finding the Fourth Proportional to 429,510.20, 644,264.48 and 113,942.30

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Solution

The fourth proportional to 429,510.20, 644,264.48 and 113,942.30 is: 170,913.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,510.20 : 644,264.48 = 113,942.30 : x
  2. Step 2: Convert to fraction form
    429,510.20/644,264.48 = 113,942.30/x
  3. Step 3: Cross multiply
    429,510.20x = 644,264.48 × 113,942.30
  4. Step 4: Simplify right side
    429,510.20x = 73,408,973,723.04
  5. Step 5: Solve for x
    x = 73,408,973,723.04/429,510.20
  6. Step 6: Final answer
    x = 170,913.23

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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.