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Finding the Fourth Proportional to 279,000.56, 385,024.01 and 154,824.08

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Solution

The fourth proportional to 279,000.56, 385,024.01 and 154,824.08 is: 213,659.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,000.56 : 385,024.01 = 154,824.08 : x
  2. Step 2: Convert to fraction form
    279,000.56/385,024.01 = 154,824.08/x
  3. Step 3: Cross multiply
    279,000.56x = 385,024.01 × 154,824.08
  4. Step 4: Simplify right side
    279,000.56x = 59,610,988,126.16
  5. Step 5: Solve for x
    x = 59,610,988,126.16/279,000.56
  6. Step 6: Final answer
    x = 213,659.03

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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.