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Finding the Fourth Proportional to 251,125.80, 376,688.70 and 156,647.40

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Solution

The fourth proportional to 251,125.80, 376,688.70 and 156,647.40 is: 234,971.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,125.80 : 376,688.70 = 156,647.40 : x
  2. Step 2: Convert to fraction form
    251,125.80/376,688.70 = 156,647.40/x
  3. Step 3: Cross multiply
    251,125.80x = 376,688.70 × 156,647.40
  4. Step 4: Simplify right side
    251,125.80x = 59,007,305,464.38
  5. Step 5: Solve for x
    x = 59,007,305,464.38/251,125.80
  6. Step 6: Final answer
    x = 234,971.10

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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.