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Finding the Fourth Proportional to 478,915.07, 718,164.39 and 137,283.26

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Solution

The fourth proportional to 478,915.07, 718,164.39 and 137,283.26 is: 205,865.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,915.07 : 718,164.39 = 137,283.26 : x
  2. Step 2: Convert to fraction form
    478,915.07/718,164.39 = 137,283.26/x
  3. Step 3: Cross multiply
    478,915.07x = 718,164.39 × 137,283.26
  4. Step 4: Simplify right side
    478,915.07x = 98,591,945,599.10
  5. Step 5: Solve for x
    x = 98,591,945,599.10/478,915.07
  6. Step 6: Final answer
    x = 205,865.20

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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.