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Finding the Fourth Proportional to 478,736.37, 718,005.06 and 141,697.94

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Solution

The fourth proportional to 478,736.37, 718,005.06 and 141,697.94 is: 212,517.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,736.37 : 718,005.06 = 141,697.94 : x
  2. Step 2: Convert to fraction form
    478,736.37/718,005.06 = 141,697.94/x
  3. Step 3: Cross multiply
    478,736.37x = 718,005.06 × 141,697.94
  4. Step 4: Simplify right side
    478,736.37x = 101,739,834,321.55
  5. Step 5: Solve for x
    x = 101,739,834,321.55/478,736.37
  6. Step 6: Final answer
    x = 212,517.45

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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.