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Finding the Fourth Proportional to 279,003.84, 385,029.68 and 151,679.92

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Solution

The fourth proportional to 279,003.84, 385,029.68 and 151,679.92 is: 209,320.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,003.84 : 385,029.68 = 151,679.92 : x
  2. Step 2: Convert to fraction form
    279,003.84/385,029.68 = 151,679.92/x
  3. Step 3: Cross multiply
    279,003.84x = 385,029.68 × 151,679.92
  4. Step 4: Simplify right side
    279,003.84x = 58,401,271,060.03
  5. Step 5: Solve for x
    x = 58,401,271,060.03/279,003.84
  6. Step 6: Final answer
    x = 209,320.67

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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.