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Finding the Fourth Proportional to 478,556.40, 660,436.83 and 263,696.22

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Solution

The fourth proportional to 478,556.40, 660,436.83 and 263,696.22 is: 363,916.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,556.40 : 660,436.83 = 263,696.22 : x
  2. Step 2: Convert to fraction form
    478,556.40/660,436.83 = 263,696.22/x
  3. Step 3: Cross multiply
    478,556.40x = 660,436.83 × 263,696.22
  4. Step 4: Simplify right side
    478,556.40x = 174,154,695,619.78
  5. Step 5: Solve for x
    x = 174,154,695,619.78/478,556.40
  6. Step 6: Final answer
    x = 363,916.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.