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Finding the Fourth Proportional to 279,215.93, 418,823.96 and 195,140.30

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Solution

The fourth proportional to 279,215.93, 418,823.96 and 195,140.30 is: 292,710.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,215.93 : 418,823.96 = 195,140.30 : x
  2. Step 2: Convert to fraction form
    279,215.93/418,823.96 = 195,140.30/x
  3. Step 3: Cross multiply
    279,215.93x = 418,823.96 × 195,140.30
  4. Step 4: Simplify right side
    279,215.93x = 81,729,430,131.77
  5. Step 5: Solve for x
    x = 81,729,430,131.77/279,215.93
  6. Step 6: Final answer
    x = 292,710.49

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1.5x scale

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.