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Finding the Fourth Proportional to 319,719.60, 479,873.88 and 162,058.32

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Solution

The fourth proportional to 319,719.60, 479,873.88 and 162,058.32 is: 243,236.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,719.60 : 479,873.88 = 162,058.32 : x
  2. Step 2: Convert to fraction form
    319,719.60/479,873.88 = 162,058.32/x
  3. Step 3: Cross multiply
    319,719.60x = 479,873.88 × 162,058.32
  4. Step 4: Simplify right side
    319,719.60x = 77,767,554,804.68
  5. Step 5: Solve for x
    x = 77,767,554,804.68/319,719.60
  6. Step 6: Final answer
    x = 243,236.74

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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.