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Finding the Fourth Proportional to 251,147.60, 376,721.40 and 146,085.20

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Solution

The fourth proportional to 251,147.60, 376,721.40 and 146,085.20 is: 219,127.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,147.60 : 376,721.40 = 146,085.20 : x
  2. Step 2: Convert to fraction form
    251,147.60/376,721.40 = 146,085.20/x
  3. Step 3: Cross multiply
    251,147.60x = 376,721.40 × 146,085.20
  4. Step 4: Simplify right side
    251,147.60x = 55,033,421,063.28
  5. Step 5: Solve for x
    x = 55,033,421,063.28/251,147.60
  6. Step 6: Final answer
    x = 219,127.80

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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.