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Finding the Fourth Proportional to 251,279.10, 376,918.65 and 180,420.30

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Solution

The fourth proportional to 251,279.10, 376,918.65 and 180,420.30 is: 270,630.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,279.10 : 376,918.65 = 180,420.30 : x
  2. Step 2: Convert to fraction form
    251,279.10/376,918.65 = 180,420.30/x
  3. Step 3: Cross multiply
    251,279.10x = 376,918.65 × 180,420.30
  4. Step 4: Simplify right side
    251,279.10x = 68,003,775,908.60
  5. Step 5: Solve for x
    x = 68,003,775,908.60/251,279.10
  6. Step 6: Final answer
    x = 270,630.45

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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.