Home / 427,400.40-641,158.20-147,003.60

Finding the Fourth Proportional to 427,400.40, 641,158.20 and 147,003.60

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Solution

The fourth proportional to 427,400.40, 641,158.20 and 147,003.60 is: 220,525.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,400.40 : 641,158.20 = 147,003.60 : x
  2. Step 2: Convert to fraction form
    427,400.40/641,158.20 = 147,003.60/x
  3. Step 3: Cross multiply
    427,400.40x = 641,158.20 × 147,003.60
  4. Step 4: Simplify right side
    427,400.40x = 94,252,563,569.52
  5. Step 5: Solve for x
    x = 94,252,563,569.52/427,400.40
  6. Step 6: Final answer
    x = 220,525.21

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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.