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Finding the Fourth Proportional to 519,740.76, 717,242.26 and 281,276.76

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Solution

The fourth proportional to 519,740.76, 717,242.26 and 281,276.76 is: 388,161.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,740.76 : 717,242.26 = 281,276.76 : x
  2. Step 2: Convert to fraction form
    519,740.76/717,242.26 = 281,276.76/x
  3. Step 3: Cross multiply
    519,740.76x = 717,242.26 × 281,276.76
  4. Step 4: Simplify right side
    519,740.76x = 201,743,579,027.88
  5. Step 5: Solve for x
    x = 201,743,579,027.88/519,740.76
  6. Step 6: Final answer
    x = 388,161.93

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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.