Home / 257,828.10-386,742.15-254,328.90

Finding the Fourth Proportional to 257,828.10, 386,742.15 and 254,328.90

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Solution

The fourth proportional to 257,828.10, 386,742.15 and 254,328.90 is: 381,493.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,828.10 : 386,742.15 = 254,328.90 : x
  2. Step 2: Convert to fraction form
    257,828.10/386,742.15 = 254,328.90/x
  3. Step 3: Cross multiply
    257,828.10x = 386,742.15 × 254,328.90
  4. Step 4: Simplify right side
    257,828.10x = 98,359,705,593.14
  5. Step 5: Solve for x
    x = 98,359,705,593.14/257,828.10
  6. Step 6: Final answer
    x = 381,493.35

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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.