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Finding the Fourth Proportional to 478,326.49, 660,090.49 and 263,466.54

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Solution

The fourth proportional to 478,326.49, 660,090.49 and 263,466.54 is: 363,583.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,326.49 : 660,090.49 = 263,466.54 : x
  2. Step 2: Convert to fraction form
    478,326.49/660,090.49 = 263,466.54/x
  3. Step 3: Cross multiply
    478,326.49x = 660,090.49 × 263,466.54
  4. Step 4: Simplify right side
    478,326.49x = 173,911,756,828.54
  5. Step 5: Solve for x
    x = 173,911,756,828.54/478,326.49
  6. Step 6: Final answer
    x = 363,583.79

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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.