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Finding the Fourth Proportional to 306,678.78, 423,369.44 and 237,613.32

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Solution

The fourth proportional to 306,678.78, 423,369.44 and 237,613.32 is: 328,024.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,678.78 : 423,369.44 = 237,613.32 : x
  2. Step 2: Convert to fraction form
    306,678.78/423,369.44 = 237,613.32/x
  3. Step 3: Cross multiply
    306,678.78x = 423,369.44 × 237,613.32
  4. Step 4: Simplify right side
    306,678.78x = 100,598,218,224.94
  5. Step 5: Solve for x
    x = 100,598,218,224.94/306,678.78
  6. Step 6: Final answer
    x = 328,024.71

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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.