Home / 259,276.10-388,136.55-154,040.90

Finding the Fourth Proportional to 259,276.10, 388,136.55 and 154,040.90

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Solution

The fourth proportional to 259,276.10, 388,136.55 and 154,040.90 is: 230,599.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,276.10 : 388,136.55 = 154,040.90 : x
  2. Step 2: Convert to fraction form
    259,276.10/388,136.55 = 154,040.90/x
  3. Step 3: Cross multiply
    259,276.10x = 388,136.55 × 154,040.90
  4. Step 4: Simplify right side
    259,276.10x = 59,788,903,484.90
  5. Step 5: Solve for x
    x = 59,788,903,484.90/259,276.10
  6. Step 6: Final answer
    x = 230,599.36

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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.