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Finding the Fourth Proportional to 279,298.64, 385,562.76 and 178,754.96

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Solution

The fourth proportional to 279,298.64, 385,562.76 and 178,754.96 is: 246,765.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,298.64 : 385,562.76 = 178,754.96 : x
  2. Step 2: Convert to fraction form
    279,298.64/385,562.76 = 178,754.96/x
  3. Step 3: Cross multiply
    279,298.64x = 385,562.76 × 178,754.96
  4. Step 4: Simplify right side
    279,298.64x = 68,921,255,741.29
  5. Step 5: Solve for x
    x = 68,921,255,741.29/279,298.64
  6. Step 6: Final answer
    x = 246,765.45

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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.