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Finding the Fourth Proportional to 319,717.60, 479,870.88 and 162,056.32

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Solution

The fourth proportional to 319,717.60, 479,870.88 and 162,056.32 is: 243,233.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,717.60 : 479,870.88 = 162,056.32 : x
  2. Step 2: Convert to fraction form
    319,717.60/479,870.88 = 162,056.32/x
  3. Step 3: Cross multiply
    319,717.60x = 479,870.88 × 162,056.32
  4. Step 4: Simplify right side
    319,717.60x = 77,766,108,887.96
  5. Step 5: Solve for x
    x = 77,766,108,887.96/319,717.60
  6. Step 6: Final answer
    x = 243,233.74

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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.