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Finding the Fourth Proportional to 515,335.55, 773,223.64 and 266,192.51

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Solution

The fourth proportional to 515,335.55, 773,223.64 and 266,192.51 is: 399,402.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,335.55 : 773,223.64 = 266,192.51 : x
  2. Step 2: Convert to fraction form
    515,335.55/773,223.64 = 266,192.51/x
  3. Step 3: Cross multiply
    515,335.55x = 773,223.64 × 266,192.51
  4. Step 4: Simplify right side
    515,335.55x = 205,826,336,991.34
  5. Step 5: Solve for x
    x = 205,826,336,991.34/515,335.55
  6. Step 6: Final answer
    x = 399,402.56

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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.