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Finding the Fourth Proportional to 251,139.80, 376,709.70 and 162,493.40

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Solution

The fourth proportional to 251,139.80, 376,709.70 and 162,493.40 is: 243,740.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,139.80 : 376,709.70 = 162,493.40 : x
  2. Step 2: Convert to fraction form
    251,139.80/376,709.70 = 162,493.40/x
  3. Step 3: Cross multiply
    251,139.80x = 376,709.70 × 162,493.40
  4. Step 4: Simplify right side
    251,139.80x = 61,212,839,965.98
  5. Step 5: Solve for x
    x = 61,212,839,965.98/251,139.80
  6. Step 6: Final answer
    x = 243,740.10

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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.