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Finding the Fourth Proportional to 406,239.78, 560,571.76 and 242,863.98

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Solution

The fourth proportional to 406,239.78, 560,571.76 and 242,863.98 is: 335,128.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,239.78 : 560,571.76 = 242,863.98 : x
  2. Step 2: Convert to fraction form
    406,239.78/560,571.76 = 242,863.98/x
  3. Step 3: Cross multiply
    406,239.78x = 560,571.76 × 242,863.98
  4. Step 4: Simplify right side
    406,239.78x = 136,142,688,709.21
  5. Step 5: Solve for x
    x = 136,142,688,709.21/406,239.78
  6. Step 6: Final answer
    x = 335,128.90

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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.