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Finding the Fourth Proportional to 279,469.63, 385,655.34 and 152,144.92

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Solution

The fourth proportional to 279,469.63, 385,655.34 and 152,144.92 is: 209,953.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,469.63 : 385,655.34 = 152,144.92 : x
  2. Step 2: Convert to fraction form
    279,469.63/385,655.34 = 152,144.92/x
  3. Step 3: Cross multiply
    279,469.63x = 385,655.34 × 152,144.92
  4. Step 4: Simplify right side
    279,469.63x = 58,675,500,851.87
  5. Step 5: Solve for x
    x = 58,675,500,851.87/279,469.63
  6. Step 6: Final answer
    x = 209,953.05

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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.