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Finding the Fourth Proportional to 379,434.48, 523,613.12 and 207,348.62

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Solution

The fourth proportional to 379,434.48, 523,613.12 and 207,348.62 is: 286,137.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,434.48 : 523,613.12 = 207,348.62 : x
  2. Step 2: Convert to fraction form
    379,434.48/523,613.12 = 207,348.62/x
  3. Step 3: Cross multiply
    379,434.48x = 523,613.12 × 207,348.62
  4. Step 4: Simplify right side
    379,434.48x = 108,570,457,845.89
  5. Step 5: Solve for x
    x = 108,570,457,845.89/379,434.48
  6. Step 6: Final answer
    x = 286,137.56

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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.