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Finding the Fourth Proportional to 406,339.57, 560,715.33 and 231,908.91

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Solution

The fourth proportional to 406,339.57, 560,715.33 and 231,908.91 is: 320,015.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,339.57 : 560,715.33 = 231,908.91 : x
  2. Step 2: Convert to fraction form
    406,339.57/560,715.33 = 231,908.91/x
  3. Step 3: Cross multiply
    406,339.57x = 560,715.33 × 231,908.91
  4. Step 4: Simplify right side
    406,339.57x = 130,034,879,841.05
  5. Step 5: Solve for x
    x = 130,034,879,841.05/406,339.57
  6. Step 6: Final answer
    x = 320,015.31

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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.