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Finding the Fourth Proportional to 319,663.64, 441,138.88 and 176,420.60

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Solution

The fourth proportional to 319,663.64, 441,138.88 and 176,420.60 is: 243,462.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,663.64 : 441,138.88 = 176,420.60 : x
  2. Step 2: Convert to fraction form
    319,663.64/441,138.88 = 176,420.60/x
  3. Step 3: Cross multiply
    319,663.64x = 441,138.88 × 176,420.60
  4. Step 4: Simplify right side
    319,663.64x = 77,825,985,892.93
  5. Step 5: Solve for x
    x = 77,825,985,892.93/319,663.64
  6. Step 6: Final answer
    x = 243,462.12

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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.