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Finding the Fourth Proportional to 385,918.60, 577,649.10 and 275,326.60

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Solution

The fourth proportional to 385,918.60, 577,649.10 and 275,326.60 is: 412,113.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,918.60 : 577,649.10 = 275,326.60 : x
  2. Step 2: Convert to fraction form
    385,918.60/577,649.10 = 275,326.60/x
  3. Step 3: Cross multiply
    385,918.60x = 577,649.10 × 275,326.60
  4. Step 4: Simplify right side
    385,918.60x = 159,042,162,696.06
  5. Step 5: Solve for x
    x = 159,042,162,696.06/385,918.60
  6. Step 6: Final answer
    x = 412,113.24

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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.