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Finding the Fourth Proportional to 515,722.20, 772,927.20 and 248,908.20

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Solution

The fourth proportional to 515,722.20, 772,927.20 and 248,908.20 is: 373,045.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,722.20 : 772,927.20 = 248,908.20 : x
  2. Step 2: Convert to fraction form
    515,722.20/772,927.20 = 248,908.20/x
  3. Step 3: Cross multiply
    515,722.20x = 772,927.20 × 248,908.20
  4. Step 4: Simplify right side
    515,722.20x = 192,387,918,083.04
  5. Step 5: Solve for x
    x = 192,387,918,083.04/515,722.20
  6. Step 6: Final answer
    x = 373,045.64

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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.