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Finding the Fourth Proportional to 279,555.62, 385,776.57 and 152,228.42

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Solution

The fourth proportional to 279,555.62, 385,776.57 and 152,228.42 is: 210,069.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,555.62 : 385,776.57 = 152,228.42 : x
  2. Step 2: Convert to fraction form
    279,555.62/385,776.57 = 152,228.42/x
  3. Step 3: Cross multiply
    279,555.62x = 385,776.57 × 152,228.42
  4. Step 4: Simplify right side
    279,555.62x = 58,726,157,724.12
  5. Step 5: Solve for x
    x = 58,726,157,724.12/279,555.62
  6. Step 6: Final answer
    x = 210,069.67

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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.