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Finding the Fourth Proportional to 478,158.73, 659,886.66 and 274,208.02

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Solution

The fourth proportional to 478,158.73, 659,886.66 and 274,208.02 is: 378,422.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,158.73 : 659,886.66 = 274,208.02 : x
  2. Step 2: Convert to fraction form
    478,158.73/659,886.66 = 274,208.02/x
  3. Step 3: Cross multiply
    478,158.73x = 659,886.66 × 274,208.02
  4. Step 4: Simplify right side
    478,158.73x = 180,946,212,813.30
  5. Step 5: Solve for x
    x = 180,946,212,813.30/478,158.73
  6. Step 6: Final answer
    x = 378,422.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.