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Finding the Fourth Proportional to 279,474.08, 385,674.12 and 152,149.64

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Solution

The fourth proportional to 279,474.08, 385,674.12 and 152,149.64 is: 209,966.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,474.08 : 385,674.12 = 152,149.64 : x
  2. Step 2: Convert to fraction form
    279,474.08/385,674.12 = 152,149.64/x
  3. Step 3: Cross multiply
    279,474.08x = 385,674.12 × 152,149.64
  4. Step 4: Simplify right side
    279,474.08x = 58,680,178,515.32
  5. Step 5: Solve for x
    x = 58,680,178,515.32/279,474.08
  6. Step 6: Final answer
    x = 209,966.44

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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.