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Finding the Fourth Proportional to 279,004.84, 385,031.06 and 151,680.92

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Solution

The fourth proportional to 279,004.84, 385,031.06 and 151,680.92 is: 209,322.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,004.84 : 385,031.06 = 151,680.92 : x
  2. Step 2: Convert to fraction form
    279,004.84/385,031.06 = 151,680.92/x
  3. Step 3: Cross multiply
    279,004.84x = 385,031.06 × 151,680.92
  4. Step 4: Simplify right side
    279,004.84x = 58,401,865,409.38
  5. Step 5: Solve for x
    x = 58,401,865,409.38/279,004.84
  6. Step 6: Final answer
    x = 209,322.05

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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.