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Finding the Fourth Proportional to 352,279.40, 528,419.10 and 347,613.80

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Solution

The fourth proportional to 352,279.40, 528,419.10 and 347,613.80 is: 521,420.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,279.40 : 528,419.10 = 347,613.80 : x
  2. Step 2: Convert to fraction form
    352,279.40/528,419.10 = 347,613.80/x
  3. Step 3: Cross multiply
    352,279.40x = 528,419.10 × 347,613.80
  4. Step 4: Simplify right side
    352,279.40x = 183,685,771,343.58
  5. Step 5: Solve for x
    x = 183,685,771,343.58/352,279.40
  6. Step 6: Final answer
    x = 521,420.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.