Home / 258,136.02-356,215.20-143,421.90

Finding the Fourth Proportional to 258,136.02, 356,215.20 and 143,421.90

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Solution

The fourth proportional to 258,136.02, 356,215.20 and 143,421.90 is: 197,915.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,136.02 : 356,215.20 = 143,421.90 : x
  2. Step 2: Convert to fraction form
    258,136.02/356,215.20 = 143,421.90/x
  3. Step 3: Cross multiply
    258,136.02x = 356,215.20 × 143,421.90
  4. Step 4: Simplify right side
    258,136.02x = 51,089,060,792.88
  5. Step 5: Solve for x
    x = 51,089,060,792.88/258,136.02
  6. Step 6: Final answer
    x = 197,915.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.