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Finding the Fourth Proportional to 353,052.82, 529,412.84 and 128,254.74

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Solution

The fourth proportional to 353,052.82, 529,412.84 and 128,254.74 is: 192,321.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,052.82 : 529,412.84 = 128,254.74 : x
  2. Step 2: Convert to fraction form
    353,052.82/529,412.84 = 128,254.74/x
  3. Step 3: Cross multiply
    353,052.82x = 529,412.84 × 128,254.74
  4. Step 4: Simplify right side
    353,052.82x = 67,899,706,146.86
  5. Step 5: Solve for x
    x = 67,899,706,146.86/353,052.82
  6. Step 6: Final answer
    x = 192,321.66

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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.