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Finding the Fourth Proportional to 343,407.20, 515,102.70 and 94,089.20

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Solution

The fourth proportional to 343,407.20, 515,102.70 and 94,089.20 is: 141,131.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,407.20 : 515,102.70 = 94,089.20 : x
  2. Step 2: Convert to fraction form
    343,407.20/515,102.70 = 94,089.20/x
  3. Step 3: Cross multiply
    343,407.20x = 515,102.70 × 94,089.20
  4. Step 4: Simplify right side
    343,407.20x = 48,465,600,960.84
  5. Step 5: Solve for x
    x = 48,465,600,960.84/343,407.20
  6. Step 6: Final answer
    x = 141,131.58

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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.