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Finding the Fourth Proportional to 279,604.72, 385,842.56 and 152,280.64

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Solution

The fourth proportional to 279,604.72, 385,842.56 and 152,280.64 is: 210,140.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,604.72 : 385,842.56 = 152,280.64 : x
  2. Step 2: Convert to fraction form
    279,604.72/385,842.56 = 152,280.64/x
  3. Step 3: Cross multiply
    279,604.72x = 385,842.56 × 152,280.64
  4. Step 4: Simplify right side
    279,604.72x = 58,756,351,976.04
  5. Step 5: Solve for x
    x = 58,756,351,976.04/279,604.72
  6. Step 6: Final answer
    x = 210,140.77

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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.