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Finding the Fourth Proportional to 343,798.41, 515,230.40 and 130,451.61

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Solution

The fourth proportional to 343,798.41, 515,230.40 and 130,451.61 is: 195,500.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,798.41 : 515,230.40 = 130,451.61 : x
  2. Step 2: Convert to fraction form
    343,798.41/515,230.40 = 130,451.61/x
  3. Step 3: Cross multiply
    343,798.41x = 515,230.40 × 130,451.61
  4. Step 4: Simplify right side
    343,798.41x = 67,212,634,548.69
  5. Step 5: Solve for x
    x = 67,212,634,548.69/343,798.41
  6. Step 6: Final answer
    x = 195,500.13

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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.