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Finding the Fourth Proportional to 373,919.78, 560,953.60 and 137,264.50

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Solution

The fourth proportional to 373,919.78, 560,953.60 and 137,264.50 is: 205,923.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,919.78 : 560,953.60 = 137,264.50 : x
  2. Step 2: Convert to fraction form
    373,919.78/560,953.60 = 137,264.50/x
  3. Step 3: Cross multiply
    373,919.78x = 560,953.60 × 137,264.50
  4. Step 4: Simplify right side
    373,919.78x = 76,999,015,427.20
  5. Step 5: Solve for x
    x = 76,999,015,427.20/373,919.78
  6. Step 6: Final answer
    x = 205,923.89

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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.