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Finding the Fourth Proportional to 394,755.44, 592,165.56 and 128,444.72

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Solution

The fourth proportional to 394,755.44, 592,165.56 and 128,444.72 is: 192,677.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,755.44 : 592,165.56 = 128,444.72 : x
  2. Step 2: Convert to fraction form
    394,755.44/592,165.56 = 128,444.72/x
  3. Step 3: Cross multiply
    394,755.44x = 592,165.56 × 128,444.72
  4. Step 4: Simplify right side
    394,755.44x = 76,060,539,547.84
  5. Step 5: Solve for x
    x = 76,060,539,547.84/394,755.44
  6. Step 6: Final answer
    x = 192,677.62

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1.5x scale

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.