Home / 285,220.20-427,830.30-145,252.20

Finding the Fourth Proportional to 285,220.20, 427,830.30 and 145,252.20

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Solution

The fourth proportional to 285,220.20, 427,830.30 and 145,252.20 is: 217,878.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,220.20 : 427,830.30 = 145,252.20 : x
  2. Step 2: Convert to fraction form
    285,220.20/427,830.30 = 145,252.20/x
  3. Step 3: Cross multiply
    285,220.20x = 427,830.30 × 145,252.20
  4. Step 4: Simplify right side
    285,220.20x = 62,143,292,301.66
  5. Step 5: Solve for x
    x = 62,143,292,301.66/285,220.20
  6. Step 6: Final answer
    x = 217,878.30

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1.5x scale

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.