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Finding the Fourth Proportional to 520,144.88, 717,800.74 and 281,680.88

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Solution

The fourth proportional to 520,144.88, 717,800.74 and 281,680.88 is: 388,720.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,144.88 : 717,800.74 = 281,680.88 : x
  2. Step 2: Convert to fraction form
    520,144.88/717,800.74 = 281,680.88/x
  3. Step 3: Cross multiply
    520,144.88x = 717,800.74 × 281,680.88
  4. Step 4: Simplify right side
    520,144.88x = 202,190,739,814.65
  5. Step 5: Solve for x
    x = 202,190,739,814.65/520,144.88
  6. Step 6: Final answer
    x = 388,720.05

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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.