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Finding the Fourth Proportional to 501,255, 691,731.90 and 274,900.50

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Solution

The fourth proportional to 501,255, 691,731.90 and 274,900.50 is: 379,362.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,255 : 691,731.90 = 274,900.50 : x
  2. Step 2: Convert to fraction form
    501,255/691,731.90 = 274,900.50/x
  3. Step 3: Cross multiply
    501,255x = 691,731.90 × 274,900.50
  4. Step 4: Simplify right side
    501,255x = 190,157,445,175.95
  5. Step 5: Solve for x
    x = 190,157,445,175.95/501,255
  6. Step 6: Final answer
    x = 379,362.69

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1.5x scale

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.