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Finding the Fourth Proportional to 479,872.08, 719,963.58 and 142,915.52

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Solution

The fourth proportional to 479,872.08, 719,963.58 and 142,915.52 is: 214,419.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,872.08 : 719,963.58 = 142,915.52 : x
  2. Step 2: Convert to fraction form
    479,872.08/719,963.58 = 142,915.52/x
  3. Step 3: Cross multiply
    479,872.08x = 719,963.58 × 142,915.52
  4. Step 4: Simplify right side
    479,872.08x = 102,893,969,416.76
  5. Step 5: Solve for x
    x = 102,893,969,416.76/479,872.08
  6. Step 6: Final answer
    x = 214,419.58

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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.