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Finding the Fourth Proportional to 251,138.40, 376,707.60 and 230,920.80

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Solution

The fourth proportional to 251,138.40, 376,707.60 and 230,920.80 is: 346,381.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,138.40 : 376,707.60 = 230,920.80 : x
  2. Step 2: Convert to fraction form
    251,138.40/376,707.60 = 230,920.80/x
  3. Step 3: Cross multiply
    251,138.40x = 376,707.60 × 230,920.80
  4. Step 4: Simplify right side
    251,138.40x = 86,989,620,358.08
  5. Step 5: Solve for x
    x = 86,989,620,358.08/251,138.40
  6. Step 6: Final answer
    x = 346,381.20

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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.