Home / 427,226.40-640,897.20-146,829.60

Finding the Fourth Proportional to 427,226.40, 640,897.20 and 146,829.60

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Solution

The fourth proportional to 427,226.40, 640,897.20 and 146,829.60 is: 220,264.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,226.40 : 640,897.20 = 146,829.60 : x
  2. Step 2: Convert to fraction form
    427,226.40/640,897.20 = 146,829.60/x
  3. Step 3: Cross multiply
    427,226.40x = 640,897.20 × 146,829.60
  4. Step 4: Simplify right side
    427,226.40x = 94,102,679,517.12
  5. Step 5: Solve for x
    x = 94,102,679,517.12/427,226.40
  6. Step 6: Final answer
    x = 220,264.20

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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.