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Finding the Fourth Proportional to 280,373.96, 420,560.88 and 154,812.56

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Solution

The fourth proportional to 280,373.96, 420,560.88 and 154,812.56 is: 232,218.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,373.96 : 420,560.88 = 154,812.56 : x
  2. Step 2: Convert to fraction form
    280,373.96/420,560.88 = 154,812.56/x
  3. Step 3: Cross multiply
    280,373.96x = 420,560.88 × 154,812.56
  4. Step 4: Simplify right side
    280,373.96x = 65,108,106,468.65
  5. Step 5: Solve for x
    x = 65,108,106,468.65/280,373.96
  6. Step 6: Final answer
    x = 232,218.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.