Home / 427,829.76-641,683.20-132,303.36

Finding the Fourth Proportional to 427,829.76, 641,683.20 and 132,303.36

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Solution

The fourth proportional to 427,829.76, 641,683.20 and 132,303.36 is: 198,436.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,829.76 : 641,683.20 = 132,303.36 : x
  2. Step 2: Convert to fraction form
    427,829.76/641,683.20 = 132,303.36/x
  3. Step 3: Cross multiply
    427,829.76x = 641,683.20 × 132,303.36
  4. Step 4: Simplify right side
    427,829.76x = 84,896,843,415.55
  5. Step 5: Solve for x
    x = 84,896,843,415.55/427,829.76
  6. Step 6: Final answer
    x = 198,436.04

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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.