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Finding the Fourth Proportional to 372,310, 513,748.92 and 211,113.52

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Solution

The fourth proportional to 372,310, 513,748.92 and 211,113.52 is: 291,314.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,310 : 513,748.92 = 211,113.52 : x
  2. Step 2: Convert to fraction form
    372,310/513,748.92 = 211,113.52/x
  3. Step 3: Cross multiply
    372,310x = 513,748.92 × 211,113.52
  4. Step 4: Simplify right side
    372,310x = 108,459,342,897.40
  5. Step 5: Solve for x
    x = 108,459,342,897.40/372,310
  6. Step 6: Final answer
    x = 291,314.61

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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.