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Finding the Fourth Proportional to 319,352.40, 479,417.40 and 161,499.60

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Solution

The fourth proportional to 319,352.40, 479,417.40 and 161,499.60 is: 242,446.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,352.40 : 479,417.40 = 161,499.60 : x
  2. Step 2: Convert to fraction form
    319,352.40/479,417.40 = 161,499.60/x
  3. Step 3: Cross multiply
    319,352.40x = 479,417.40 × 161,499.60
  4. Step 4: Simplify right side
    319,352.40x = 77,425,718,333.04
  5. Step 5: Solve for x
    x = 77,425,718,333.04/319,352.40
  6. Step 6: Final answer
    x = 242,446.02

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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.