Home / 260,378.03-390,428.12-123,457.25

Finding the Fourth Proportional to 260,378.03, 390,428.12 and 123,457.25

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Solution

The fourth proportional to 260,378.03, 390,428.12 and 123,457.25 is: 185,120.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,378.03 : 390,428.12 = 123,457.25 : x
  2. Step 2: Convert to fraction form
    260,378.03/390,428.12 = 123,457.25/x
  3. Step 3: Cross multiply
    260,378.03x = 390,428.12 × 123,457.25
  4. Step 4: Simplify right side
    260,378.03x = 48,201,179,448.44
  5. Step 5: Solve for x
    x = 48,201,179,448.44/260,378.03
  6. Step 6: Final answer
    x = 185,120.00

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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.