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Finding the Fourth Proportional to 279,775, 386,089.68 and 152,450.56

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Solution

The fourth proportional to 279,775, 386,089.68 and 152,450.56 is: 210,381.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,775 : 386,089.68 = 152,450.56 : x
  2. Step 2: Convert to fraction form
    279,775/386,089.68 = 152,450.56/x
  3. Step 3: Cross multiply
    279,775x = 386,089.68 × 152,450.56
  4. Step 4: Simplify right side
    279,775x = 58,859,587,926.22
  5. Step 5: Solve for x
    x = 58,859,587,926.22/279,775
  6. Step 6: Final answer
    x = 210,381.87

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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.